diff --git a/mayan/apps/cabinets/migrations/0001_initial.py b/mayan/apps/cabinets/migrations/0001_initial.py
index 6b6a3bf6e0..205a0f2c51 100644
--- a/mayan/apps/cabinets/migrations/0001_initial.py
+++ b/mayan/apps/cabinets/migrations/0001_initial.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-01-24 07:37
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/checkouts/migrations/0001_initial.py b/mayan/apps/checkouts/migrations/0001_initial.py
index 672c598657..0080ccc437 100644
--- a/mayan/apps/checkouts/migrations/0001_initial.py
+++ b/mayan/apps/checkouts/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/checkouts/migrations/0002_documentcheckout_user.py b/mayan/apps/checkouts/migrations/0002_documentcheckout_user.py
index 1a7a768002..a78e39ea11 100644
--- a/mayan/apps/checkouts/migrations/0002_documentcheckout_user.py
+++ b/mayan/apps/checkouts/migrations/0002_documentcheckout_user.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/checkouts/migrations/0003_auto_20150617_0325.py b/mayan/apps/checkouts/migrations/0003_auto_20150617_0325.py
index 055e67e651..64155fcb6c 100644
--- a/mayan/apps/checkouts/migrations/0003_auto_20150617_0325.py
+++ b/mayan/apps/checkouts/migrations/0003_auto_20150617_0325.py
@@ -1,15 +1,16 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
 
 
-def move_from_content_type_user_to_foreign_key_field_user(apps, schema_editor):
+def operation_move_from_content_type_user_to_foreign_key_field_user(apps, schema_editor):
     # The model references the use who checked out the document using a
     # generic.GenericForeignKey. This migrations changes that to a simpler
     # ForeignKey to the User model
 
-    DocumentCheckout = apps.get_model('checkouts', 'DocumentCheckout')
+    DocumentCheckout = apps.get_model(
+        app_label='checkouts', model_name='DocumentCheckout'
+    )
 
     for document_checkout in DocumentCheckout.objects.using(schema_editor.connection.alias).all():
         document_checkout.user = document_checkout.user_object
@@ -24,6 +25,6 @@ class Migration(migrations.Migration):
 
     operations = [
         migrations.RunPython(
-            move_from_content_type_user_to_foreign_key_field_user
+            code=operation_move_from_content_type_user_to_foreign_key_field_user
         ),
     ]
diff --git a/mayan/apps/checkouts/migrations/0004_auto_20150617_0330.py b/mayan/apps/checkouts/migrations/0004_auto_20150617_0330.py
index ccf63f23d5..767943a481 100644
--- a/mayan/apps/checkouts/migrations/0004_auto_20150617_0330.py
+++ b/mayan/apps/checkouts/migrations/0004_auto_20150617_0330.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/checkouts/migrations/0005_auto_20160122_0756.py b/mayan/apps/checkouts/migrations/0005_auto_20160122_0756.py
index f154beedd6..63cb00cb08 100644
--- a/mayan/apps/checkouts/migrations/0005_auto_20160122_0756.py
+++ b/mayan/apps/checkouts/migrations/0005_auto_20160122_0756.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -14,6 +13,8 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentcheckout',
             name='document',
-            field=models.OneToOneField(verbose_name='Document', to='documents.Document'),
+            field=models.OneToOneField(
+                verbose_name='Document', to='documents.Document'
+            ),
         ),
     ]
diff --git a/mayan/apps/checkouts/migrations/0006_newversionblock.py b/mayan/apps/checkouts/migrations/0006_newversionblock.py
index 49f9e01ad1..f9c6603f1b 100644
--- a/mayan/apps/checkouts/migrations/0006_newversionblock.py
+++ b/mayan/apps/checkouts/migrations/0006_newversionblock.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.9.11 on 2016-12-22 05:34
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -17,8 +15,18 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='NewVersionBlock',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('document', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='documents.Document', verbose_name='Document')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'document', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to='documents.Document', verbose_name='Document'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'New version block',
diff --git a/mayan/apps/checkouts/migrations/0007_auto_20180310_1715.py b/mayan/apps/checkouts/migrations/0007_auto_20180310_1715.py
index 0edb58e116..4e2ba4362c 100644
--- a/mayan/apps/checkouts/migrations/0007_auto_20180310_1715.py
+++ b/mayan/apps/checkouts/migrations/0007_auto_20180310_1715.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.10 on 2018-03-10 17:15
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,9 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='documentcheckout',
-            options={'ordering': ('pk',), 'verbose_name': 'Document checkout', 'verbose_name_plural': 'Document checkouts'},
+            options={
+                'ordering': ('pk',), 'verbose_name': 'Document checkout',
+                'verbose_name_plural': 'Document checkouts'
+            },
         ),
     ]
diff --git a/mayan/apps/common/migrations/0003_auto_20150614_0723.py b/mayan/apps/common/migrations/0003_auto_20150614_0723.py
index 6c0271eb7f..c35e49022f 100644
--- a/mayan/apps/common/migrations/0003_auto_20150614_0723.py
+++ b/mayan/apps/common/migrations/0003_auto_20150614_0723.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/common/migrations/0004_delete_anonymoususersingleton.py b/mayan/apps/common/migrations/0004_delete_anonymoususersingleton.py
index 30339b9a87..2b254a43ee 100644
--- a/mayan/apps/common/migrations/0004_delete_anonymoususersingleton.py
+++ b/mayan/apps/common/migrations/0004_delete_anonymoususersingleton.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/common/migrations/0005_auto_20150706_1832.py b/mayan/apps/common/migrations/0005_auto_20150706_1832.py
index aefc315a9f..18d815c308 100644
--- a/mayan/apps/common/migrations/0005_auto_20150706_1832.py
+++ b/mayan/apps/common/migrations/0005_auto_20150706_1832.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/common/migrations/0006_auto_20160313_0313.py b/mayan/apps/common/migrations/0006_auto_20160313_0313.py
index 67c7af3a2f..5ab1d1ab0a 100644
--- a/mayan/apps/common/migrations/0006_auto_20160313_0313.py
+++ b/mayan/apps/common/migrations/0006_auto_20160313_0313.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/common/migrations/0007_auto_20170118_1758.py b/mayan/apps/common/migrations/0007_auto_20170118_1758.py
index 6d15aa0594..8546b5dc92 100644
--- a/mayan/apps/common/migrations/0007_auto_20170118_1758.py
+++ b/mayan/apps/common/migrations/0007_auto_20170118_1758.py
@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-01-18 17:58
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +14,505 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='userlocaleprofile',
             name='timezone',
-            field=models.CharField(choices=[(b'Africa/Abidjan', b'Africa/Abidjan'), (b'Africa/Accra', b'Africa/Accra'), (b'Africa/Addis_Ababa', b'Africa/Addis_Ababa'), (b'Africa/Algiers', b'Africa/Algiers'), (b'Africa/Asmara', b'Africa/Asmara'), (b'Africa/Bamako', b'Africa/Bamako'), (b'Africa/Bangui', b'Africa/Bangui'), (b'Africa/Banjul', b'Africa/Banjul'), (b'Africa/Bissau', b'Africa/Bissau'), (b'Africa/Blantyre', b'Africa/Blantyre'), (b'Africa/Brazzaville', b'Africa/Brazzaville'), (b'Africa/Bujumbura', b'Africa/Bujumbura'), (b'Africa/Cairo', b'Africa/Cairo'), (b'Africa/Casablanca', b'Africa/Casablanca'), (b'Africa/Ceuta', b'Africa/Ceuta'), (b'Africa/Conakry', b'Africa/Conakry'), (b'Africa/Dakar', b'Africa/Dakar'), (b'Africa/Dar_es_Salaam', b'Africa/Dar_es_Salaam'), (b'Africa/Djibouti', b'Africa/Djibouti'), (b'Africa/Douala', b'Africa/Douala'), (b'Africa/El_Aaiun', b'Africa/El_Aaiun'), (b'Africa/Freetown', b'Africa/Freetown'), (b'Africa/Gaborone', b'Africa/Gaborone'), (b'Africa/Harare', b'Africa/Harare'), (b'Africa/Johannesburg', b'Africa/Johannesburg'), (b'Africa/Juba', b'Africa/Juba'), (b'Africa/Kampala', b'Africa/Kampala'), (b'Africa/Khartoum', b'Africa/Khartoum'), (b'Africa/Kigali', b'Africa/Kigali'), (b'Africa/Kinshasa', b'Africa/Kinshasa'), (b'Africa/Lagos', b'Africa/Lagos'), (b'Africa/Libreville', b'Africa/Libreville'), (b'Africa/Lome', b'Africa/Lome'), (b'Africa/Luanda', b'Africa/Luanda'), (b'Africa/Lubumbashi', b'Africa/Lubumbashi'), (b'Africa/Lusaka', b'Africa/Lusaka'), (b'Africa/Malabo', b'Africa/Malabo'), (b'Africa/Maputo', b'Africa/Maputo'), (b'Africa/Maseru', b'Africa/Maseru'), (b'Africa/Mbabane', b'Africa/Mbabane'), (b'Africa/Mogadishu', b'Africa/Mogadishu'), (b'Africa/Monrovia', b'Africa/Monrovia'), (b'Africa/Nairobi', b'Africa/Nairobi'), (b'Africa/Ndjamena', b'Africa/Ndjamena'), (b'Africa/Niamey', b'Africa/Niamey'), (b'Africa/Nouakchott', b'Africa/Nouakchott'), (b'Africa/Ouagadougou', b'Africa/Ouagadougou'), (b'Africa/Porto-Novo', b'Africa/Porto-Novo'), (b'Africa/Sao_Tome', b'Africa/Sao_Tome'), (b'Africa/Tripoli', b'Africa/Tripoli'), (b'Africa/Tunis', b'Africa/Tunis'), (b'Africa/Windhoek', b'Africa/Windhoek'), (b'America/Adak', b'America/Adak'), (b'America/Anchorage', b'America/Anchorage'), (b'America/Anguilla', b'America/Anguilla'), (b'America/Antigua', b'America/Antigua'), (b'America/Araguaina', b'America/Araguaina'), (b'America/Argentina/Buenos_Aires', b'America/Argentina/Buenos_Aires'), (b'America/Argentina/Catamarca', b'America/Argentina/Catamarca'), (b'America/Argentina/Cordoba', b'America/Argentina/Cordoba'), (b'America/Argentina/Jujuy', b'America/Argentina/Jujuy'), (b'America/Argentina/La_Rioja', b'America/Argentina/La_Rioja'), (b'America/Argentina/Mendoza', b'America/Argentina/Mendoza'), (b'America/Argentina/Rio_Gallegos', b'America/Argentina/Rio_Gallegos'), (b'America/Argentina/Salta', b'America/Argentina/Salta'), (b'America/Argentina/San_Juan', b'America/Argentina/San_Juan'), (b'America/Argentina/San_Luis', b'America/Argentina/San_Luis'), (b'America/Argentina/Tucuman', b'America/Argentina/Tucuman'), (b'America/Argentina/Ushuaia', b'America/Argentina/Ushuaia'), (b'America/Aruba', b'America/Aruba'), (b'America/Asuncion', b'America/Asuncion'), (b'America/Atikokan', b'America/Atikokan'), (b'America/Bahia', b'America/Bahia'), (b'America/Bahia_Banderas', b'America/Bahia_Banderas'), (b'America/Barbados', b'America/Barbados'), (b'America/Belem', b'America/Belem'), (b'America/Belize', b'America/Belize'), (b'America/Blanc-Sablon', b'America/Blanc-Sablon'), (b'America/Boa_Vista', b'America/Boa_Vista'), (b'America/Bogota', b'America/Bogota'), (b'America/Boise', b'America/Boise'), (b'America/Cambridge_Bay', b'America/Cambridge_Bay'), (b'America/Campo_Grande', b'America/Campo_Grande'), (b'America/Cancun', b'America/Cancun'), (b'America/Caracas', b'America/Caracas'), (b'America/Cayenne', b'America/Cayenne'), (b'America/Cayman', b'America/Cayman'), (b'America/Chicago', b'America/Chicago'), (b'America/Chihuahua', b'America/Chihuahua'), (b'America/Costa_Rica', b'America/Costa_Rica'), (b'America/Creston', b'America/Creston'), (b'America/Cuiaba', b'America/Cuiaba'), (b'America/Curacao', b'America/Curacao'), (b'America/Danmarkshavn', b'America/Danmarkshavn'), (b'America/Dawson', b'America/Dawson'), (b'America/Dawson_Creek', b'America/Dawson_Creek'), (b'America/Denver', b'America/Denver'), (b'America/Detroit', b'America/Detroit'), (b'America/Dominica', b'America/Dominica'), (b'America/Edmonton', b'America/Edmonton'), (b'America/Eirunepe', b'America/Eirunepe'), (b'America/El_Salvador', b'America/El_Salvador'), (b'America/Fort_Nelson', b'America/Fort_Nelson'), (b'America/Fortaleza', b'America/Fortaleza'), (b'America/Glace_Bay', b'America/Glace_Bay'), (b'America/Godthab', b'America/Godthab'), (b'America/Goose_Bay', b'America/Goose_Bay'), (b'America/Grand_Turk', b'America/Grand_Turk'), (b'America/Grenada', b'America/Grenada'), (b'America/Guadeloupe', b'America/Guadeloupe'), (b'America/Guatemala', b'America/Guatemala'), (b'America/Guayaquil', b'America/Guayaquil'), (b'America/Guyana', b'America/Guyana'), (b'America/Halifax', b'America/Halifax'), (b'America/Havana', b'America/Havana'), (b'America/Hermosillo', b'America/Hermosillo'), (b'America/Indiana/Indianapolis', b'America/Indiana/Indianapolis'), (b'America/Indiana/Knox', b'America/Indiana/Knox'), (b'America/Indiana/Marengo', b'America/Indiana/Marengo'), (b'America/Indiana/Petersburg', b'America/Indiana/Petersburg'), (b'America/Indiana/Tell_City', b'America/Indiana/Tell_City'), (b'America/Indiana/Vevay', b'America/Indiana/Vevay'), (b'America/Indiana/Vincennes', b'America/Indiana/Vincennes'), (b'America/Indiana/Winamac', b'America/Indiana/Winamac'), (b'America/Inuvik', b'America/Inuvik'), (b'America/Iqaluit', b'America/Iqaluit'), (b'America/Jamaica', b'America/Jamaica'), (b'America/Juneau', b'America/Juneau'), (b'America/Kentucky/Louisville', b'America/Kentucky/Louisville'), (b'America/Kentucky/Monticello', b'America/Kentucky/Monticello'), (b'America/Kralendijk', b'America/Kralendijk'), (b'America/La_Paz', b'America/La_Paz'), (b'America/Lima', b'America/Lima'), (b'America/Los_Angeles', b'America/Los_Angeles'), (b'America/Lower_Princes', b'America/Lower_Princes'), (b'America/Maceio', b'America/Maceio'), (b'America/Managua', b'America/Managua'), (b'America/Manaus', b'America/Manaus'), (b'America/Marigot', b'America/Marigot'), (b'America/Martinique', b'America/Martinique'), (b'America/Matamoros', b'America/Matamoros'), (b'America/Mazatlan', b'America/Mazatlan'), (b'America/Menominee', b'America/Menominee'), (b'America/Merida', b'America/Merida'), (b'America/Metlakatla', b'America/Metlakatla'), (b'America/Mexico_City', b'America/Mexico_City'), (b'America/Miquelon', b'America/Miquelon'), (b'America/Moncton', b'America/Moncton'), (b'America/Monterrey', b'America/Monterrey'), (b'America/Montevideo', b'America/Montevideo'), (b'America/Montserrat', b'America/Montserrat'), (b'America/Nassau', b'America/Nassau'), (b'America/New_York', b'America/New_York'), (b'America/Nipigon', b'America/Nipigon'), (b'America/Nome', b'America/Nome'), (b'America/Noronha', b'America/Noronha'), (b'America/North_Dakota/Beulah', b'America/North_Dakota/Beulah'), (b'America/North_Dakota/Center', b'America/North_Dakota/Center'), (b'America/North_Dakota/New_Salem', b'America/North_Dakota/New_Salem'), (b'America/Ojinaga', b'America/Ojinaga'), (b'America/Panama', b'America/Panama'), (b'America/Pangnirtung', b'America/Pangnirtung'), (b'America/Paramaribo', b'America/Paramaribo'), (b'America/Phoenix', b'America/Phoenix'), (b'America/Port-au-Prince', b'America/Port-au-Prince'), (b'America/Port_of_Spain', b'America/Port_of_Spain'), (b'America/Porto_Velho', b'America/Porto_Velho'), (b'America/Puerto_Rico', b'America/Puerto_Rico'), (b'America/Rainy_River', b'America/Rainy_River'), (b'America/Rankin_Inlet', b'America/Rankin_Inlet'), (b'America/Recife', b'America/Recife'), (b'America/Regina', b'America/Regina'), (b'America/Resolute', b'America/Resolute'), (b'America/Rio_Branco', b'America/Rio_Branco'), (b'America/Santarem', b'America/Santarem'), (b'America/Santiago', b'America/Santiago'), (b'America/Santo_Domingo', b'America/Santo_Domingo'), (b'America/Sao_Paulo', b'America/Sao_Paulo'), (b'America/Scoresbysund', b'America/Scoresbysund'), (b'America/Sitka', b'America/Sitka'), (b'America/St_Barthelemy', b'America/St_Barthelemy'), (b'America/St_Johns', b'America/St_Johns'), (b'America/St_Kitts', b'America/St_Kitts'), (b'America/St_Lucia', b'America/St_Lucia'), (b'America/St_Thomas', b'America/St_Thomas'), (b'America/St_Vincent', b'America/St_Vincent'), (b'America/Swift_Current', b'America/Swift_Current'), (b'America/Tegucigalpa', b'America/Tegucigalpa'), (b'America/Thule', b'America/Thule'), (b'America/Thunder_Bay', b'America/Thunder_Bay'), (b'America/Tijuana', b'America/Tijuana'), (b'America/Toronto', b'America/Toronto'), (b'America/Tortola', b'America/Tortola'), (b'America/Vancouver', b'America/Vancouver'), (b'America/Whitehorse', b'America/Whitehorse'), (b'America/Winnipeg', b'America/Winnipeg'), (b'America/Yakutat', b'America/Yakutat'), (b'America/Yellowknife', b'America/Yellowknife'), (b'Antarctica/Casey', b'Antarctica/Casey'), (b'Antarctica/Davis', b'Antarctica/Davis'), (b'Antarctica/DumontDUrville', b'Antarctica/DumontDUrville'), (b'Antarctica/Macquarie', b'Antarctica/Macquarie'), (b'Antarctica/Mawson', b'Antarctica/Mawson'), (b'Antarctica/McMurdo', b'Antarctica/McMurdo'), (b'Antarctica/Palmer', b'Antarctica/Palmer'), (b'Antarctica/Rothera', b'Antarctica/Rothera'), (b'Antarctica/Syowa', b'Antarctica/Syowa'), (b'Antarctica/Troll', b'Antarctica/Troll'), (b'Antarctica/Vostok', b'Antarctica/Vostok'), (b'Arctic/Longyearbyen', b'Arctic/Longyearbyen'), (b'Asia/Aden', b'Asia/Aden'), (b'Asia/Almaty', b'Asia/Almaty'), (b'Asia/Amman', b'Asia/Amman'), (b'Asia/Anadyr', b'Asia/Anadyr'), (b'Asia/Aqtau', b'Asia/Aqtau'), (b'Asia/Aqtobe', b'Asia/Aqtobe'), (b'Asia/Ashgabat', b'Asia/Ashgabat'), (b'Asia/Baghdad', b'Asia/Baghdad'), (b'Asia/Bahrain', b'Asia/Bahrain'), (b'Asia/Baku', b'Asia/Baku'), (b'Asia/Bangkok', b'Asia/Bangkok'), (b'Asia/Barnaul', b'Asia/Barnaul'), (b'Asia/Beirut', b'Asia/Beirut'), (b'Asia/Bishkek', b'Asia/Bishkek'), (b'Asia/Brunei', b'Asia/Brunei'), (b'Asia/Chita', b'Asia/Chita'), (b'Asia/Choibalsan', b'Asia/Choibalsan'), (b'Asia/Colombo', b'Asia/Colombo'), (b'Asia/Damascus', b'Asia/Damascus'), (b'Asia/Dhaka', b'Asia/Dhaka'), (b'Asia/Dili', b'Asia/Dili'), (b'Asia/Dubai', b'Asia/Dubai'), (b'Asia/Dushanbe', b'Asia/Dushanbe'), (b'Asia/Gaza', b'Asia/Gaza'), (b'Asia/Hebron', b'Asia/Hebron'), (b'Asia/Ho_Chi_Minh', b'Asia/Ho_Chi_Minh'), (b'Asia/Hong_Kong', b'Asia/Hong_Kong'), (b'Asia/Hovd', b'Asia/Hovd'), (b'Asia/Irkutsk', b'Asia/Irkutsk'), (b'Asia/Jakarta', b'Asia/Jakarta'), (b'Asia/Jayapura', b'Asia/Jayapura'), (b'Asia/Jerusalem', b'Asia/Jerusalem'), (b'Asia/Kabul', b'Asia/Kabul'), (b'Asia/Kamchatka', b'Asia/Kamchatka'), (b'Asia/Karachi', b'Asia/Karachi'), (b'Asia/Kathmandu', b'Asia/Kathmandu'), (b'Asia/Khandyga', b'Asia/Khandyga'), (b'Asia/Kolkata', b'Asia/Kolkata'), (b'Asia/Krasnoyarsk', b'Asia/Krasnoyarsk'), (b'Asia/Kuala_Lumpur', b'Asia/Kuala_Lumpur'), (b'Asia/Kuching', b'Asia/Kuching'), (b'Asia/Kuwait', b'Asia/Kuwait'), (b'Asia/Macau', b'Asia/Macau'), (b'Asia/Magadan', b'Asia/Magadan'), (b'Asia/Makassar', b'Asia/Makassar'), (b'Asia/Manila', b'Asia/Manila'), (b'Asia/Muscat', b'Asia/Muscat'), (b'Asia/Nicosia', b'Asia/Nicosia'), (b'Asia/Novokuznetsk', b'Asia/Novokuznetsk'), (b'Asia/Novosibirsk', b'Asia/Novosibirsk'), (b'Asia/Omsk', b'Asia/Omsk'), (b'Asia/Oral', b'Asia/Oral'), (b'Asia/Phnom_Penh', b'Asia/Phnom_Penh'), (b'Asia/Pontianak', b'Asia/Pontianak'), (b'Asia/Pyongyang', b'Asia/Pyongyang'), (b'Asia/Qatar', b'Asia/Qatar'), (b'Asia/Qyzylorda', b'Asia/Qyzylorda'), (b'Asia/Riyadh', b'Asia/Riyadh'), (b'Asia/Sakhalin', b'Asia/Sakhalin'), (b'Asia/Samarkand', b'Asia/Samarkand'), (b'Asia/Seoul', b'Asia/Seoul'), (b'Asia/Shanghai', b'Asia/Shanghai'), (b'Asia/Singapore', b'Asia/Singapore'), (b'Asia/Srednekolymsk', b'Asia/Srednekolymsk'), (b'Asia/Taipei', b'Asia/Taipei'), (b'Asia/Tashkent', b'Asia/Tashkent'), (b'Asia/Tbilisi', b'Asia/Tbilisi'), (b'Asia/Tehran', b'Asia/Tehran'), (b'Asia/Thimphu', b'Asia/Thimphu'), (b'Asia/Tokyo', b'Asia/Tokyo'), (b'Asia/Tomsk', b'Asia/Tomsk'), (b'Asia/Ulaanbaatar', b'Asia/Ulaanbaatar'), (b'Asia/Urumqi', b'Asia/Urumqi'), (b'Asia/Ust-Nera', b'Asia/Ust-Nera'), (b'Asia/Vientiane', b'Asia/Vientiane'), (b'Asia/Vladivostok', b'Asia/Vladivostok'), (b'Asia/Yakutsk', b'Asia/Yakutsk'), (b'Asia/Yangon', b'Asia/Yangon'), (b'Asia/Yekaterinburg', b'Asia/Yekaterinburg'), (b'Asia/Yerevan', b'Asia/Yerevan'), (b'Atlantic/Azores', b'Atlantic/Azores'), (b'Atlantic/Bermuda', b'Atlantic/Bermuda'), (b'Atlantic/Canary', b'Atlantic/Canary'), (b'Atlantic/Cape_Verde', b'Atlantic/Cape_Verde'), (b'Atlantic/Faroe', b'Atlantic/Faroe'), (b'Atlantic/Madeira', b'Atlantic/Madeira'), (b'Atlantic/Reykjavik', b'Atlantic/Reykjavik'), (b'Atlantic/South_Georgia', b'Atlantic/South_Georgia'), (b'Atlantic/St_Helena', b'Atlantic/St_Helena'), (b'Atlantic/Stanley', b'Atlantic/Stanley'), (b'Australia/Adelaide', b'Australia/Adelaide'), (b'Australia/Brisbane', b'Australia/Brisbane'), (b'Australia/Broken_Hill', b'Australia/Broken_Hill'), (b'Australia/Currie', b'Australia/Currie'), (b'Australia/Darwin', b'Australia/Darwin'), (b'Australia/Eucla', b'Australia/Eucla'), (b'Australia/Hobart', b'Australia/Hobart'), (b'Australia/Lindeman', b'Australia/Lindeman'), (b'Australia/Lord_Howe', b'Australia/Lord_Howe'), (b'Australia/Melbourne', b'Australia/Melbourne'), (b'Australia/Perth', b'Australia/Perth'), (b'Australia/Sydney', b'Australia/Sydney'), (b'Canada/Atlantic', b'Canada/Atlantic'), (b'Canada/Central', b'Canada/Central'), (b'Canada/Eastern', b'Canada/Eastern'), (b'Canada/Mountain', b'Canada/Mountain'), (b'Canada/Newfoundland', b'Canada/Newfoundland'), (b'Canada/Pacific', b'Canada/Pacific'), (b'Europe/Amsterdam', b'Europe/Amsterdam'), (b'Europe/Andorra', b'Europe/Andorra'), (b'Europe/Astrakhan', b'Europe/Astrakhan'), (b'Europe/Athens', b'Europe/Athens'), (b'Europe/Belgrade', b'Europe/Belgrade'), (b'Europe/Berlin', b'Europe/Berlin'), (b'Europe/Bratislava', b'Europe/Bratislava'), (b'Europe/Brussels', b'Europe/Brussels'), (b'Europe/Bucharest', b'Europe/Bucharest'), (b'Europe/Budapest', b'Europe/Budapest'), (b'Europe/Busingen', b'Europe/Busingen'), (b'Europe/Chisinau', b'Europe/Chisinau'), (b'Europe/Copenhagen', b'Europe/Copenhagen'), (b'Europe/Dublin', b'Europe/Dublin'), (b'Europe/Gibraltar', b'Europe/Gibraltar'), (b'Europe/Guernsey', b'Europe/Guernsey'), (b'Europe/Helsinki', b'Europe/Helsinki'), (b'Europe/Isle_of_Man', b'Europe/Isle_of_Man'), (b'Europe/Istanbul', b'Europe/Istanbul'), (b'Europe/Jersey', b'Europe/Jersey'), (b'Europe/Kaliningrad', b'Europe/Kaliningrad'), (b'Europe/Kiev', b'Europe/Kiev'), (b'Europe/Kirov', b'Europe/Kirov'), (b'Europe/Lisbon', b'Europe/Lisbon'), (b'Europe/Ljubljana', b'Europe/Ljubljana'), (b'Europe/London', b'Europe/London'), (b'Europe/Luxembourg', b'Europe/Luxembourg'), (b'Europe/Madrid', b'Europe/Madrid'), (b'Europe/Malta', b'Europe/Malta'), (b'Europe/Mariehamn', b'Europe/Mariehamn'), (b'Europe/Minsk', b'Europe/Minsk'), (b'Europe/Monaco', b'Europe/Monaco'), (b'Europe/Moscow', b'Europe/Moscow'), (b'Europe/Oslo', b'Europe/Oslo'), (b'Europe/Paris', b'Europe/Paris'), (b'Europe/Podgorica', b'Europe/Podgorica'), (b'Europe/Prague', b'Europe/Prague'), (b'Europe/Riga', b'Europe/Riga'), (b'Europe/Rome', b'Europe/Rome'), (b'Europe/Samara', b'Europe/Samara'), (b'Europe/San_Marino', b'Europe/San_Marino'), (b'Europe/Sarajevo', b'Europe/Sarajevo'), (b'Europe/Simferopol', b'Europe/Simferopol'), (b'Europe/Skopje', b'Europe/Skopje'), (b'Europe/Sofia', b'Europe/Sofia'), (b'Europe/Stockholm', b'Europe/Stockholm'), (b'Europe/Tallinn', b'Europe/Tallinn'), (b'Europe/Tirane', b'Europe/Tirane'), (b'Europe/Ulyanovsk', b'Europe/Ulyanovsk'), (b'Europe/Uzhgorod', b'Europe/Uzhgorod'), (b'Europe/Vaduz', b'Europe/Vaduz'), (b'Europe/Vatican', b'Europe/Vatican'), (b'Europe/Vienna', b'Europe/Vienna'), (b'Europe/Vilnius', b'Europe/Vilnius'), (b'Europe/Volgograd', b'Europe/Volgograd'), (b'Europe/Warsaw', b'Europe/Warsaw'), (b'Europe/Zagreb', b'Europe/Zagreb'), (b'Europe/Zaporozhye', b'Europe/Zaporozhye'), (b'Europe/Zurich', b'Europe/Zurich'), (b'GMT', b'GMT'), (b'Indian/Antananarivo', b'Indian/Antananarivo'), (b'Indian/Chagos', b'Indian/Chagos'), (b'Indian/Christmas', b'Indian/Christmas'), (b'Indian/Cocos', b'Indian/Cocos'), (b'Indian/Comoro', b'Indian/Comoro'), (b'Indian/Kerguelen', b'Indian/Kerguelen'), (b'Indian/Mahe', b'Indian/Mahe'), (b'Indian/Maldives', b'Indian/Maldives'), (b'Indian/Mauritius', b'Indian/Mauritius'), (b'Indian/Mayotte', b'Indian/Mayotte'), (b'Indian/Reunion', b'Indian/Reunion'), (b'Pacific/Apia', b'Pacific/Apia'), (b'Pacific/Auckland', b'Pacific/Auckland'), (b'Pacific/Bougainville', b'Pacific/Bougainville'), (b'Pacific/Chatham', b'Pacific/Chatham'), (b'Pacific/Chuuk', b'Pacific/Chuuk'), (b'Pacific/Easter', b'Pacific/Easter'), (b'Pacific/Efate', b'Pacific/Efate'), (b'Pacific/Enderbury', b'Pacific/Enderbury'), (b'Pacific/Fakaofo', b'Pacific/Fakaofo'), (b'Pacific/Fiji', b'Pacific/Fiji'), (b'Pacific/Funafuti', b'Pacific/Funafuti'), (b'Pacific/Galapagos', b'Pacific/Galapagos'), (b'Pacific/Gambier', b'Pacific/Gambier'), (b'Pacific/Guadalcanal', b'Pacific/Guadalcanal'), (b'Pacific/Guam', b'Pacific/Guam'), (b'Pacific/Honolulu', b'Pacific/Honolulu'), (b'Pacific/Johnston', b'Pacific/Johnston'), (b'Pacific/Kiritimati', b'Pacific/Kiritimati'), (b'Pacific/Kosrae', b'Pacific/Kosrae'), (b'Pacific/Kwajalein', b'Pacific/Kwajalein'), (b'Pacific/Majuro', b'Pacific/Majuro'), (b'Pacific/Marquesas', b'Pacific/Marquesas'), (b'Pacific/Midway', b'Pacific/Midway'), (b'Pacific/Nauru', b'Pacific/Nauru'), (b'Pacific/Niue', b'Pacific/Niue'), (b'Pacific/Norfolk', b'Pacific/Norfolk'), (b'Pacific/Noumea', b'Pacific/Noumea'), (b'Pacific/Pago_Pago', b'Pacific/Pago_Pago'), (b'Pacific/Palau', b'Pacific/Palau'), (b'Pacific/Pitcairn', b'Pacific/Pitcairn'), (b'Pacific/Pohnpei', b'Pacific/Pohnpei'), (b'Pacific/Port_Moresby', b'Pacific/Port_Moresby'), (b'Pacific/Rarotonga', b'Pacific/Rarotonga'), (b'Pacific/Saipan', b'Pacific/Saipan'), (b'Pacific/Tahiti', b'Pacific/Tahiti'), (b'Pacific/Tarawa', b'Pacific/Tarawa'), (b'Pacific/Tongatapu', b'Pacific/Tongatapu'), (b'Pacific/Wake', b'Pacific/Wake'), (b'Pacific/Wallis', b'Pacific/Wallis'), (b'US/Alaska', b'US/Alaska'), (b'US/Arizona', b'US/Arizona'), (b'US/Central', b'US/Central'), (b'US/Eastern', b'US/Eastern'), (b'US/Hawaii', b'US/Hawaii'), (b'US/Mountain', b'US/Mountain'), (b'US/Pacific', b'US/Pacific'), (b'UTC', b'UTC')], max_length=48, verbose_name='Timezone'),
+            field=models.CharField(
+                choices=[
+                    (b'Africa/Abidjan', b'Africa/Abidjan'),
+                    (b'Africa/Accra', b'Africa/Accra'),
+                    (b'Africa/Addis_Ababa', b'Africa/Addis_Ababa'),
+                    (b'Africa/Algiers', b'Africa/Algiers'),
+                    (b'Africa/Asmara', b'Africa/Asmara'),
+                    (b'Africa/Bamako', b'Africa/Bamako'),
+                    (b'Africa/Bangui', b'Africa/Bangui'),
+                    (b'Africa/Banjul', b'Africa/Banjul'),
+                    (b'Africa/Bissau', b'Africa/Bissau'),
+                    (b'Africa/Blantyre', b'Africa/Blantyre'),
+                    (b'Africa/Brazzaville', b'Africa/Brazzaville'),
+                    (b'Africa/Bujumbura', b'Africa/Bujumbura'),
+                    (b'Africa/Cairo', b'Africa/Cairo'),
+                    (b'Africa/Casablanca', b'Africa/Casablanca'),
+                    (b'Africa/Ceuta', b'Africa/Ceuta'),
+                    (b'Africa/Conakry', b'Africa/Conakry'),
+                    (b'Africa/Dakar', b'Africa/Dakar'),
+                    (b'Africa/Dar_es_Salaam', b'Africa/Dar_es_Salaam'),
+                    (b'Africa/Djibouti', b'Africa/Djibouti'),
+                    (b'Africa/Douala', b'Africa/Douala'),
+                    (b'Africa/El_Aaiun', b'Africa/El_Aaiun'),
+                    (b'Africa/Freetown', b'Africa/Freetown'),
+                    (b'Africa/Gaborone', b'Africa/Gaborone'),
+                    (b'Africa/Harare', b'Africa/Harare'),
+                    (b'Africa/Johannesburg', b'Africa/Johannesburg'),
+                    (b'Africa/Juba', b'Africa/Juba'),
+                    (b'Africa/Kampala', b'Africa/Kampala'),
+                    (b'Africa/Khartoum', b'Africa/Khartoum'),
+                    (b'Africa/Kigali', b'Africa/Kigali'),
+                    (b'Africa/Kinshasa', b'Africa/Kinshasa'),
+                    (b'Africa/Lagos', b'Africa/Lagos'),
+                    (b'Africa/Libreville', b'Africa/Libreville'),
+                    (b'Africa/Lome', b'Africa/Lome'),
+                    (b'Africa/Luanda', b'Africa/Luanda'),
+                    (b'Africa/Lubumbashi', b'Africa/Lubumbashi'),
+                    (b'Africa/Lusaka', b'Africa/Lusaka'),
+                    (b'Africa/Malabo', b'Africa/Malabo'),
+                    (b'Africa/Maputo', b'Africa/Maputo'),
+                    (b'Africa/Maseru', b'Africa/Maseru'),
+                    (b'Africa/Mbabane', b'Africa/Mbabane'),
+                    (b'Africa/Mogadishu', b'Africa/Mogadishu'),
+                    (b'Africa/Monrovia', b'Africa/Monrovia'),
+                    (b'Africa/Nairobi', b'Africa/Nairobi'),
+                    (b'Africa/Ndjamena', b'Africa/Ndjamena'),
+                    (b'Africa/Niamey', b'Africa/Niamey'),
+                    (b'Africa/Nouakchott', b'Africa/Nouakchott'),
+                    (b'Africa/Ouagadougou', b'Africa/Ouagadougou'),
+                    (b'Africa/Porto-Novo', b'Africa/Porto-Novo'),
+                    (b'Africa/Sao_Tome', b'Africa/Sao_Tome'),
+                    (b'Africa/Tripoli', b'Africa/Tripoli'),
+                    (b'Africa/Tunis', b'Africa/Tunis'),
+                    (b'Africa/Windhoek', b'Africa/Windhoek'),
+                    (b'America/Adak', b'America/Adak'),
+                    (b'America/Anchorage', b'America/Anchorage'),
+                    (b'America/Anguilla', b'America/Anguilla'),
+                    (b'America/Antigua', b'America/Antigua'),
+                    (b'America/Araguaina', b'America/Araguaina'),
+                    (
+                        b'America/Argentina/Buenos_Aires',
+                        b'America/Argentina/Buenos_Aires'
+                    ),
+                    (
+                        b'America/Argentina/Catamarca',
+                        b'America/Argentina/Catamarca'
+                    ),
+                    (
+                        b'America/Argentina/Cordoba',
+                        b'America/Argentina/Cordoba'
+                    ),
+                    (b'America/Argentina/Jujuy', b'America/Argentina/Jujuy'),
+                    (
+                        b'America/Argentina/La_Rioja',
+                        b'America/Argentina/La_Rioja'
+                    ),
+                    (
+                        b'America/Argentina/Mendoza',
+                        b'America/Argentina/Mendoza'
+                    ),
+                    (
+                        b'America/Argentina/Rio_Gallegos',
+                        b'America/Argentina/Rio_Gallegos'
+                    ),
+                    (b'America/Argentina/Salta', b'America/Argentina/Salta'),
+                    (
+                        b'America/Argentina/San_Juan',
+                        b'America/Argentina/San_Juan'
+                    ),
+                    (
+                        b'America/Argentina/San_Luis',
+                        b'America/Argentina/San_Luis'
+                    ),
+                    (
+                        b'America/Argentina/Tucuman',
+                        b'America/Argentina/Tucuman'
+                    ),
+                    (
+                        b'America/Argentina/Ushuaia',
+                        b'America/Argentina/Ushuaia'
+                    ),
+                    (b'America/Aruba', b'America/Aruba'),
+                    (b'America/Asuncion', b'America/Asuncion'),
+                    (b'America/Atikokan', b'America/Atikokan'),
+                    (b'America/Bahia', b'America/Bahia'),
+                    (b'America/Bahia_Banderas', b'America/Bahia_Banderas'),
+                    (b'America/Barbados', b'America/Barbados'),
+                    (b'America/Belem', b'America/Belem'),
+                    (b'America/Belize', b'America/Belize'),
+                    (b'America/Blanc-Sablon', b'America/Blanc-Sablon'),
+                    (b'America/Boa_Vista', b'America/Boa_Vista'),
+                    (b'America/Bogota', b'America/Bogota'),
+                    (b'America/Boise', b'America/Boise'),
+                    (b'America/Cambridge_Bay', b'America/Cambridge_Bay'),
+                    (b'America/Campo_Grande', b'America/Campo_Grande'),
+                    (b'America/Cancun', b'America/Cancun'),
+                    (b'America/Caracas', b'America/Caracas'),
+                    (b'America/Cayenne', b'America/Cayenne'),
+                    (b'America/Cayman', b'America/Cayman'),
+                    (b'America/Chicago', b'America/Chicago'),
+                    (b'America/Chihuahua', b'America/Chihuahua'),
+                    (b'America/Costa_Rica', b'America/Costa_Rica'),
+                    (b'America/Creston', b'America/Creston'),
+                    (b'America/Cuiaba', b'America/Cuiaba'),
+                    (b'America/Curacao', b'America/Curacao'),
+                    (b'America/Danmarkshavn', b'America/Danmarkshavn'),
+                    (b'America/Dawson', b'America/Dawson'),
+                    (b'America/Dawson_Creek', b'America/Dawson_Creek'),
+                    (b'America/Denver', b'America/Denver'),
+                    (b'America/Detroit', b'America/Detroit'),
+                    (b'America/Dominica', b'America/Dominica'),
+                    (b'America/Edmonton', b'America/Edmonton'),
+                    (b'America/Eirunepe', b'America/Eirunepe'),
+                    (b'America/El_Salvador', b'America/El_Salvador'),
+                    (b'America/Fort_Nelson', b'America/Fort_Nelson'),
+                    (b'America/Fortaleza', b'America/Fortaleza'),
+                    (b'America/Glace_Bay', b'America/Glace_Bay'),
+                    (b'America/Godthab', b'America/Godthab'),
+                    (b'America/Goose_Bay', b'America/Goose_Bay'),
+                    (b'America/Grand_Turk', b'America/Grand_Turk'),
+                    (b'America/Grenada', b'America/Grenada'),
+                    (b'America/Guadeloupe', b'America/Guadeloupe'),
+                    (b'America/Guatemala', b'America/Guatemala'),
+                    (b'America/Guayaquil', b'America/Guayaquil'),
+                    (b'America/Guyana', b'America/Guyana'),
+                    (b'America/Halifax', b'America/Halifax'),
+                    (b'America/Havana', b'America/Havana'),
+                    (b'America/Hermosillo', b'America/Hermosillo'),
+                    (
+                        b'America/Indiana/Indianapolis',
+                        b'America/Indiana/Indianapolis'
+                    ),
+                    (b'America/Indiana/Knox', b'America/Indiana/Knox'),
+                    (b'America/Indiana/Marengo', b'America/Indiana/Marengo'),
+                    (
+                        b'America/Indiana/Petersburg',
+                        b'America/Indiana/Petersburg'
+                    ),
+                    (
+                        b'America/Indiana/Tell_City',
+                        b'America/Indiana/Tell_City'
+                    ),
+                    (b'America/Indiana/Vevay', b'America/Indiana/Vevay'),
+                    (
+                        b'America/Indiana/Vincennes',
+                        b'America/Indiana/Vincennes'
+                    ),
+                    (b'America/Indiana/Winamac', b'America/Indiana/Winamac'),
+                    (b'America/Inuvik', b'America/Inuvik'),
+                    (b'America/Iqaluit', b'America/Iqaluit'),
+                    (b'America/Jamaica', b'America/Jamaica'),
+                    (b'America/Juneau', b'America/Juneau'),
+                    (
+                        b'America/Kentucky/Louisville',
+                        b'America/Kentucky/Louisville'
+                    ),
+                    (
+                        b'America/Kentucky/Monticello',
+                        b'America/Kentucky/Monticello'
+                    ),
+                    (b'America/Kralendijk', b'America/Kralendijk'),
+                    (b'America/La_Paz', b'America/La_Paz'),
+                    (b'America/Lima', b'America/Lima'),
+                    (b'America/Los_Angeles', b'America/Los_Angeles'),
+                    (b'America/Lower_Princes', b'America/Lower_Princes'),
+                    (b'America/Maceio', b'America/Maceio'),
+                    (b'America/Managua', b'America/Managua'),
+                    (b'America/Manaus', b'America/Manaus'),
+                    (b'America/Marigot', b'America/Marigot'),
+                    (b'America/Martinique', b'America/Martinique'),
+                    (b'America/Matamoros', b'America/Matamoros'),
+                    (b'America/Mazatlan', b'America/Mazatlan'),
+                    (b'America/Menominee', b'America/Menominee'),
+                    (b'America/Merida', b'America/Merida'),
+                    (b'America/Metlakatla', b'America/Metlakatla'),
+                    (b'America/Mexico_City', b'America/Mexico_City'),
+                    (b'America/Miquelon', b'America/Miquelon'),
+                    (b'America/Moncton', b'America/Moncton'),
+                    (b'America/Monterrey', b'America/Monterrey'),
+                    (b'America/Montevideo', b'America/Montevideo'),
+                    (b'America/Montserrat', b'America/Montserrat'),
+                    (b'America/Nassau', b'America/Nassau'),
+                    (b'America/New_York', b'America/New_York'),
+                    (b'America/Nipigon', b'America/Nipigon'),
+                    (b'America/Nome', b'America/Nome'),
+                    (b'America/Noronha', b'America/Noronha'),
+                    (
+                        b'America/North_Dakota/Beulah',
+                        b'America/North_Dakota/Beulah'
+                    ),
+                    (
+                        b'America/North_Dakota/Center',
+                        b'America/North_Dakota/Center'
+                    ),
+                    (
+                        b'America/North_Dakota/New_Salem',
+                        b'America/North_Dakota/New_Salem'
+                    ),
+                    (b'America/Ojinaga', b'America/Ojinaga'),
+                    (b'America/Panama', b'America/Panama'),
+                    (b'America/Pangnirtung', b'America/Pangnirtung'),
+                    (b'America/Paramaribo', b'America/Paramaribo'),
+                    (b'America/Phoenix', b'America/Phoenix'),
+                    (b'America/Port-au-Prince', b'America/Port-au-Prince'),
+                    (b'America/Port_of_Spain', b'America/Port_of_Spain'),
+                    (b'America/Porto_Velho', b'America/Porto_Velho'),
+                    (b'America/Puerto_Rico', b'America/Puerto_Rico'),
+                    (b'America/Rainy_River', b'America/Rainy_River'),
+                    (b'America/Rankin_Inlet', b'America/Rankin_Inlet'),
+                    (b'America/Recife', b'America/Recife'),
+                    (b'America/Regina', b'America/Regina'),
+                    (b'America/Resolute', b'America/Resolute'),
+                    (b'America/Rio_Branco', b'America/Rio_Branco'),
+                    (b'America/Santarem', b'America/Santarem'),
+                    (b'America/Santiago', b'America/Santiago'),
+                    (b'America/Santo_Domingo', b'America/Santo_Domingo'),
+                    (b'America/Sao_Paulo', b'America/Sao_Paulo'),
+                    (b'America/Scoresbysund', b'America/Scoresbysund'),
+                    (b'America/Sitka', b'America/Sitka'),
+                    (b'America/St_Barthelemy', b'America/St_Barthelemy'),
+                    (b'America/St_Johns', b'America/St_Johns'),
+                    (b'America/St_Kitts', b'America/St_Kitts'),
+                    (b'America/St_Lucia', b'America/St_Lucia'),
+                    (b'America/St_Thomas', b'America/St_Thomas'),
+                    (b'America/St_Vincent', b'America/St_Vincent'),
+                    (b'America/Swift_Current', b'America/Swift_Current'),
+                    (b'America/Tegucigalpa', b'America/Tegucigalpa'),
+                    (b'America/Thule', b'America/Thule'),
+                    (b'America/Thunder_Bay', b'America/Thunder_Bay'),
+                    (b'America/Tijuana', b'America/Tijuana'),
+                    (b'America/Toronto', b'America/Toronto'),
+                    (b'America/Tortola', b'America/Tortola'),
+                    (b'America/Vancouver', b'America/Vancouver'),
+                    (b'America/Whitehorse', b'America/Whitehorse'),
+                    (b'America/Winnipeg', b'America/Winnipeg'),
+                    (b'America/Yakutat', b'America/Yakutat'),
+                    (b'America/Yellowknife', b'America/Yellowknife'),
+                    (b'Antarctica/Casey', b'Antarctica/Casey'),
+                    (b'Antarctica/Davis', b'Antarctica/Davis'),
+                    (
+                        b'Antarctica/DumontDUrville',
+                        b'Antarctica/DumontDUrville'
+                    ),
+                    (b'Antarctica/Macquarie', b'Antarctica/Macquarie'),
+                    (b'Antarctica/Mawson', b'Antarctica/Mawson'),
+                    (b'Antarctica/McMurdo', b'Antarctica/McMurdo'),
+                    (b'Antarctica/Palmer', b'Antarctica/Palmer'),
+                    (b'Antarctica/Rothera', b'Antarctica/Rothera'),
+                    (b'Antarctica/Syowa', b'Antarctica/Syowa'),
+                    (b'Antarctica/Troll', b'Antarctica/Troll'),
+                    (b'Antarctica/Vostok', b'Antarctica/Vostok'),
+                    (b'Arctic/Longyearbyen', b'Arctic/Longyearbyen'),
+                    (b'Asia/Aden', b'Asia/Aden'),
+                    (b'Asia/Almaty', b'Asia/Almaty'),
+                    (b'Asia/Amman', b'Asia/Amman'),
+                    (b'Asia/Anadyr', b'Asia/Anadyr'),
+                    (b'Asia/Aqtau', b'Asia/Aqtau'),
+                    (b'Asia/Aqtobe', b'Asia/Aqtobe'),
+                    (b'Asia/Ashgabat', b'Asia/Ashgabat'),
+                    (b'Asia/Baghdad', b'Asia/Baghdad'),
+                    (b'Asia/Bahrain', b'Asia/Bahrain'),
+                    (b'Asia/Baku', b'Asia/Baku'),
+                    (b'Asia/Bangkok', b'Asia/Bangkok'),
+                    (b'Asia/Barnaul', b'Asia/Barnaul'),
+                    (b'Asia/Beirut', b'Asia/Beirut'),
+                    (b'Asia/Bishkek', b'Asia/Bishkek'),
+                    (b'Asia/Brunei', b'Asia/Brunei'),
+                    (b'Asia/Chita', b'Asia/Chita'),
+                    (b'Asia/Choibalsan', b'Asia/Choibalsan'),
+                    (b'Asia/Colombo', b'Asia/Colombo'),
+                    (b'Asia/Damascus', b'Asia/Damascus'),
+                    (b'Asia/Dhaka', b'Asia/Dhaka'),
+                    (b'Asia/Dili', b'Asia/Dili'),
+                    (b'Asia/Dubai', b'Asia/Dubai'),
+                    (b'Asia/Dushanbe', b'Asia/Dushanbe'),
+                    (b'Asia/Gaza', b'Asia/Gaza'),
+                    (b'Asia/Hebron', b'Asia/Hebron'),
+                    (b'Asia/Ho_Chi_Minh', b'Asia/Ho_Chi_Minh'),
+                    (b'Asia/Hong_Kong', b'Asia/Hong_Kong'),
+                    (b'Asia/Hovd', b'Asia/Hovd'),
+                    (b'Asia/Irkutsk', b'Asia/Irkutsk'),
+                    (b'Asia/Jakarta', b'Asia/Jakarta'),
+                    (b'Asia/Jayapura', b'Asia/Jayapura'),
+                    (b'Asia/Jerusalem', b'Asia/Jerusalem'),
+                    (b'Asia/Kabul', b'Asia/Kabul'),
+                    (b'Asia/Kamchatka', b'Asia/Kamchatka'),
+                    (b'Asia/Karachi', b'Asia/Karachi'),
+                    (b'Asia/Kathmandu', b'Asia/Kathmandu'),
+                    (b'Asia/Khandyga', b'Asia/Khandyga'),
+                    (b'Asia/Kolkata', b'Asia/Kolkata'),
+                    (b'Asia/Krasnoyarsk', b'Asia/Krasnoyarsk'),
+                    (b'Asia/Kuala_Lumpur', b'Asia/Kuala_Lumpur'),
+                    (b'Asia/Kuching', b'Asia/Kuching'),
+                    (b'Asia/Kuwait', b'Asia/Kuwait'),
+                    (b'Asia/Macau', b'Asia/Macau'),
+                    (b'Asia/Magadan', b'Asia/Magadan'),
+                    (b'Asia/Makassar', b'Asia/Makassar'),
+                    (b'Asia/Manila', b'Asia/Manila'),
+                    (b'Asia/Muscat', b'Asia/Muscat'),
+                    (b'Asia/Nicosia', b'Asia/Nicosia'),
+                    (b'Asia/Novokuznetsk', b'Asia/Novokuznetsk'),
+                    (b'Asia/Novosibirsk', b'Asia/Novosibirsk'),
+                    (b'Asia/Omsk', b'Asia/Omsk'),
+                    (b'Asia/Oral', b'Asia/Oral'),
+                    (b'Asia/Phnom_Penh', b'Asia/Phnom_Penh'),
+                    (b'Asia/Pontianak', b'Asia/Pontianak'),
+                    (b'Asia/Pyongyang', b'Asia/Pyongyang'),
+                    (b'Asia/Qatar', b'Asia/Qatar'),
+                    (b'Asia/Qyzylorda', b'Asia/Qyzylorda'),
+                    (b'Asia/Riyadh', b'Asia/Riyadh'),
+                    (b'Asia/Sakhalin', b'Asia/Sakhalin'),
+                    (b'Asia/Samarkand', b'Asia/Samarkand'),
+                    (b'Asia/Seoul', b'Asia/Seoul'),
+                    (b'Asia/Shanghai', b'Asia/Shanghai'),
+                    (b'Asia/Singapore', b'Asia/Singapore'),
+                    (b'Asia/Srednekolymsk', b'Asia/Srednekolymsk'),
+                    (b'Asia/Taipei', b'Asia/Taipei'),
+                    (b'Asia/Tashkent', b'Asia/Tashkent'),
+                    (b'Asia/Tbilisi', b'Asia/Tbilisi'),
+                    (b'Asia/Tehran', b'Asia/Tehran'),
+                    (b'Asia/Thimphu', b'Asia/Thimphu'),
+                    (b'Asia/Tokyo', b'Asia/Tokyo'),
+                    (b'Asia/Tomsk', b'Asia/Tomsk'),
+                    (b'Asia/Ulaanbaatar', b'Asia/Ulaanbaatar'),
+                    (b'Asia/Urumqi', b'Asia/Urumqi'),
+                    (b'Asia/Ust-Nera', b'Asia/Ust-Nera'),
+                    (b'Asia/Vientiane', b'Asia/Vientiane'),
+                    (b'Asia/Vladivostok', b'Asia/Vladivostok'),
+                    (b'Asia/Yakutsk', b'Asia/Yakutsk'),
+                    (b'Asia/Yangon', b'Asia/Yangon'),
+                    (b'Asia/Yekaterinburg', b'Asia/Yekaterinburg'),
+                    (b'Asia/Yerevan', b'Asia/Yerevan'),
+                    (b'Atlantic/Azores', b'Atlantic/Azores'),
+                    (b'Atlantic/Bermuda', b'Atlantic/Bermuda'),
+                    (b'Atlantic/Canary', b'Atlantic/Canary'),
+                    (b'Atlantic/Cape_Verde', b'Atlantic/Cape_Verde'),
+                    (b'Atlantic/Faroe', b'Atlantic/Faroe'),
+                    (b'Atlantic/Madeira', b'Atlantic/Madeira'),
+                    (b'Atlantic/Reykjavik', b'Atlantic/Reykjavik'),
+                    (b'Atlantic/South_Georgia', b'Atlantic/South_Georgia'),
+                    (b'Atlantic/St_Helena', b'Atlantic/St_Helena'),
+                    (b'Atlantic/Stanley', b'Atlantic/Stanley'),
+                    (b'Australia/Adelaide', b'Australia/Adelaide'),
+                    (b'Australia/Brisbane', b'Australia/Brisbane'),
+                    (b'Australia/Broken_Hill', b'Australia/Broken_Hill'),
+                    (b'Australia/Currie', b'Australia/Currie'),
+                    (b'Australia/Darwin', b'Australia/Darwin'),
+                    (b'Australia/Eucla', b'Australia/Eucla'),
+                    (b'Australia/Hobart', b'Australia/Hobart'),
+                    (b'Australia/Lindeman', b'Australia/Lindeman'),
+                    (b'Australia/Lord_Howe', b'Australia/Lord_Howe'),
+                    (b'Australia/Melbourne', b'Australia/Melbourne'),
+                    (b'Australia/Perth', b'Australia/Perth'),
+                    (b'Australia/Sydney', b'Australia/Sydney'),
+                    (b'Canada/Atlantic', b'Canada/Atlantic'),
+                    (b'Canada/Central', b'Canada/Central'),
+                    (b'Canada/Eastern', b'Canada/Eastern'),
+                    (b'Canada/Mountain', b'Canada/Mountain'),
+                    (b'Canada/Newfoundland', b'Canada/Newfoundland'),
+                    (b'Canada/Pacific', b'Canada/Pacific'),
+                    (b'Europe/Amsterdam', b'Europe/Amsterdam'),
+                    (b'Europe/Andorra', b'Europe/Andorra'),
+                    (b'Europe/Astrakhan', b'Europe/Astrakhan'),
+                    (b'Europe/Athens', b'Europe/Athens'),
+                    (b'Europe/Belgrade', b'Europe/Belgrade'),
+                    (b'Europe/Berlin', b'Europe/Berlin'),
+                    (b'Europe/Bratislava', b'Europe/Bratislava'),
+                    (b'Europe/Brussels', b'Europe/Brussels'),
+                    (b'Europe/Bucharest', b'Europe/Bucharest'),
+                    (b'Europe/Budapest', b'Europe/Budapest'),
+                    (b'Europe/Busingen', b'Europe/Busingen'),
+                    (b'Europe/Chisinau', b'Europe/Chisinau'),
+                    (b'Europe/Copenhagen', b'Europe/Copenhagen'),
+                    (b'Europe/Dublin', b'Europe/Dublin'),
+                    (b'Europe/Gibraltar', b'Europe/Gibraltar'),
+                    (b'Europe/Guernsey', b'Europe/Guernsey'),
+                    (b'Europe/Helsinki', b'Europe/Helsinki'),
+                    (b'Europe/Isle_of_Man', b'Europe/Isle_of_Man'),
+                    (b'Europe/Istanbul', b'Europe/Istanbul'),
+                    (b'Europe/Jersey', b'Europe/Jersey'),
+                    (b'Europe/Kaliningrad', b'Europe/Kaliningrad'),
+                    (b'Europe/Kiev', b'Europe/Kiev'),
+                    (b'Europe/Kirov', b'Europe/Kirov'),
+                    (b'Europe/Lisbon', b'Europe/Lisbon'),
+                    (b'Europe/Ljubljana', b'Europe/Ljubljana'),
+                    (b'Europe/London', b'Europe/London'),
+                    (b'Europe/Luxembourg', b'Europe/Luxembourg'),
+                    (b'Europe/Madrid', b'Europe/Madrid'),
+                    (b'Europe/Malta', b'Europe/Malta'),
+                    (b'Europe/Mariehamn', b'Europe/Mariehamn'),
+                    (b'Europe/Minsk', b'Europe/Minsk'),
+                    (b'Europe/Monaco', b'Europe/Monaco'),
+                    (b'Europe/Moscow', b'Europe/Moscow'),
+                    (b'Europe/Oslo', b'Europe/Oslo'),
+                    (b'Europe/Paris', b'Europe/Paris'),
+                    (b'Europe/Podgorica', b'Europe/Podgorica'),
+                    (b'Europe/Prague', b'Europe/Prague'),
+                    (b'Europe/Riga', b'Europe/Riga'),
+                    (b'Europe/Rome', b'Europe/Rome'),
+                    (b'Europe/Samara', b'Europe/Samara'),
+                    (b'Europe/San_Marino', b'Europe/San_Marino'),
+                    (b'Europe/Sarajevo', b'Europe/Sarajevo'),
+                    (b'Europe/Simferopol', b'Europe/Simferopol'),
+                    (b'Europe/Skopje', b'Europe/Skopje'),
+                    (b'Europe/Sofia', b'Europe/Sofia'),
+                    (b'Europe/Stockholm', b'Europe/Stockholm'),
+                    (b'Europe/Tallinn', b'Europe/Tallinn'),
+                    (b'Europe/Tirane', b'Europe/Tirane'),
+                    (b'Europe/Ulyanovsk', b'Europe/Ulyanovsk'),
+                    (b'Europe/Uzhgorod', b'Europe/Uzhgorod'),
+                    (b'Europe/Vaduz', b'Europe/Vaduz'),
+                    (b'Europe/Vatican', b'Europe/Vatican'),
+                    (b'Europe/Vienna', b'Europe/Vienna'),
+                    (b'Europe/Vilnius', b'Europe/Vilnius'),
+                    (b'Europe/Volgograd', b'Europe/Volgograd'),
+                    (b'Europe/Warsaw', b'Europe/Warsaw'),
+                    (b'Europe/Zagreb', b'Europe/Zagreb'),
+                    (b'Europe/Zaporozhye', b'Europe/Zaporozhye'),
+                    (b'Europe/Zurich', b'Europe/Zurich'),
+                    (b'GMT', b'GMT'),
+                    (b'Indian/Antananarivo', b'Indian/Antananarivo'),
+                    (b'Indian/Chagos', b'Indian/Chagos'),
+                    (b'Indian/Christmas', b'Indian/Christmas'),
+                    (b'Indian/Cocos', b'Indian/Cocos'),
+                    (b'Indian/Comoro', b'Indian/Comoro'),
+                    (b'Indian/Kerguelen', b'Indian/Kerguelen'),
+                    (b'Indian/Mahe', b'Indian/Mahe'),
+                    (b'Indian/Maldives', b'Indian/Maldives'),
+                    (b'Indian/Mauritius', b'Indian/Mauritius'),
+                    (b'Indian/Mayotte', b'Indian/Mayotte'),
+                    (b'Indian/Reunion', b'Indian/Reunion'),
+                    (b'Pacific/Apia', b'Pacific/Apia'),
+                    (b'Pacific/Auckland', b'Pacific/Auckland'),
+                    (b'Pacific/Bougainville', b'Pacific/Bougainville'),
+                    (b'Pacific/Chatham', b'Pacific/Chatham'),
+                    (b'Pacific/Chuuk', b'Pacific/Chuuk'),
+                    (b'Pacific/Easter', b'Pacific/Easter'),
+                    (b'Pacific/Efate', b'Pacific/Efate'),
+                    (b'Pacific/Enderbury', b'Pacific/Enderbury'),
+                    (b'Pacific/Fakaofo', b'Pacific/Fakaofo'),
+                    (b'Pacific/Fiji', b'Pacific/Fiji'),
+                    (b'Pacific/Funafuti', b'Pacific/Funafuti'),
+                    (b'Pacific/Galapagos', b'Pacific/Galapagos'),
+                    (b'Pacific/Gambier', b'Pacific/Gambier'),
+                    (b'Pacific/Guadalcanal', b'Pacific/Guadalcanal'),
+                    (b'Pacific/Guam', b'Pacific/Guam'),
+                    (b'Pacific/Honolulu', b'Pacific/Honolulu'),
+                    (b'Pacific/Johnston', b'Pacific/Johnston'),
+                    (b'Pacific/Kiritimati', b'Pacific/Kiritimati'),
+                    (b'Pacific/Kosrae', b'Pacific/Kosrae'),
+                    (b'Pacific/Kwajalein', b'Pacific/Kwajalein'),
+                    (b'Pacific/Majuro', b'Pacific/Majuro'),
+                    (b'Pacific/Marquesas', b'Pacific/Marquesas'),
+                    (b'Pacific/Midway', b'Pacific/Midway'),
+                    (b'Pacific/Nauru', b'Pacific/Nauru'),
+                    (b'Pacific/Niue', b'Pacific/Niue'),
+                    (b'Pacific/Norfolk', b'Pacific/Norfolk'),
+                    (b'Pacific/Noumea', b'Pacific/Noumea'),
+                    (b'Pacific/Pago_Pago', b'Pacific/Pago_Pago'),
+                    (b'Pacific/Palau', b'Pacific/Palau'),
+                    (b'Pacific/Pitcairn', b'Pacific/Pitcairn'),
+                    (b'Pacific/Pohnpei', b'Pacific/Pohnpei'),
+                    (b'Pacific/Port_Moresby', b'Pacific/Port_Moresby'),
+                    (b'Pacific/Rarotonga', b'Pacific/Rarotonga'),
+                    (b'Pacific/Saipan', b'Pacific/Saipan'),
+                    (b'Pacific/Tahiti', b'Pacific/Tahiti'),
+                    (b'Pacific/Tarawa', b'Pacific/Tarawa'),
+                    (b'Pacific/Tongatapu', b'Pacific/Tongatapu'),
+                    (b'Pacific/Wake', b'Pacific/Wake'),
+                    (b'Pacific/Wallis', b'Pacific/Wallis'),
+                    (b'US/Alaska', b'US/Alaska'),
+                    (b'US/Arizona', b'US/Arizona'),
+                    (b'US/Central', b'US/Central'),
+                    (b'US/Eastern', b'US/Eastern'),
+                    (b'US/Hawaii', b'US/Hawaii'),
+                    (b'US/Mountain', b'US/Mountain'),
+                    (b'US/Pacific', b'US/Pacific'),
+                    (b'UTC', b'UTC')
+                ], max_length=48, verbose_name='Timezone'
+            ),
         ),
     ]
diff --git a/mayan/apps/common/migrations/0008_errorlogentry.py b/mayan/apps/common/migrations/0008_errorlogentry.py
index f08b282123..5e11e1ddc3 100644
--- a/mayan/apps/common/migrations/0008_errorlogentry.py
+++ b/mayan/apps/common/migrations/0008_errorlogentry.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-25 06:52
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -17,12 +15,41 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='ErrorLogEntry',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('namespace', models.CharField(max_length=128, verbose_name='Namespace')),
-                ('object_id', models.PositiveIntegerField(blank=True, null=True)),
-                ('datetime', models.DateTimeField(auto_now_add=True, db_index=True, verbose_name='Date time')),
-                ('result', models.TextField(blank=True, null=True, verbose_name='Result')),
-                ('content_type', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='error_log_content_type', to='contenttypes.ContentType')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'namespace', models.CharField(
+                        max_length=128, verbose_name='Namespace'
+                    )
+                ),
+                (
+                    'object_id', models.PositiveIntegerField(
+                        blank=True, null=True
+                    )
+                ),
+                (
+                    'datetime', models.DateTimeField(
+                        auto_now_add=True, db_index=True,
+                        verbose_name='Date time'
+                    )
+                ),
+                (
+                    'result', models.TextField(
+                        blank=True, null=True, verbose_name='Result'
+                    )
+                ),
+                (
+                    'content_type', models.ForeignKey(
+                        blank=True, null=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='error_log_content_type',
+                        to='contenttypes.ContentType'
+                    )
+                ),
             ],
             options={
                 'ordering': ('datetime',),
diff --git a/mayan/apps/common/migrations/0009_auto_20180402_0339.py b/mayan/apps/common/migrations/0009_auto_20180402_0339.py
index 49c3ee0158..b7772ad51a 100644
--- a/mayan/apps/common/migrations/0009_auto_20180402_0339.py
+++ b/mayan/apps/common/migrations/0009_auto_20180402_0339.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-02 03:39
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,508 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='userlocaleprofile',
             name='timezone',
-            field=models.CharField(choices=[(b'Africa/Abidjan', b'Africa/Abidjan'), (b'Africa/Accra', b'Africa/Accra'), (b'Africa/Addis_Ababa', b'Africa/Addis_Ababa'), (b'Africa/Algiers', b'Africa/Algiers'), (b'Africa/Asmara', b'Africa/Asmara'), (b'Africa/Bamako', b'Africa/Bamako'), (b'Africa/Bangui', b'Africa/Bangui'), (b'Africa/Banjul', b'Africa/Banjul'), (b'Africa/Bissau', b'Africa/Bissau'), (b'Africa/Blantyre', b'Africa/Blantyre'), (b'Africa/Brazzaville', b'Africa/Brazzaville'), (b'Africa/Bujumbura', b'Africa/Bujumbura'), (b'Africa/Cairo', b'Africa/Cairo'), (b'Africa/Casablanca', b'Africa/Casablanca'), (b'Africa/Ceuta', b'Africa/Ceuta'), (b'Africa/Conakry', b'Africa/Conakry'), (b'Africa/Dakar', b'Africa/Dakar'), (b'Africa/Dar_es_Salaam', b'Africa/Dar_es_Salaam'), (b'Africa/Djibouti', b'Africa/Djibouti'), (b'Africa/Douala', b'Africa/Douala'), (b'Africa/El_Aaiun', b'Africa/El_Aaiun'), (b'Africa/Freetown', b'Africa/Freetown'), (b'Africa/Gaborone', b'Africa/Gaborone'), (b'Africa/Harare', b'Africa/Harare'), (b'Africa/Johannesburg', b'Africa/Johannesburg'), (b'Africa/Juba', b'Africa/Juba'), (b'Africa/Kampala', b'Africa/Kampala'), (b'Africa/Khartoum', b'Africa/Khartoum'), (b'Africa/Kigali', b'Africa/Kigali'), (b'Africa/Kinshasa', b'Africa/Kinshasa'), (b'Africa/Lagos', b'Africa/Lagos'), (b'Africa/Libreville', b'Africa/Libreville'), (b'Africa/Lome', b'Africa/Lome'), (b'Africa/Luanda', b'Africa/Luanda'), (b'Africa/Lubumbashi', b'Africa/Lubumbashi'), (b'Africa/Lusaka', b'Africa/Lusaka'), (b'Africa/Malabo', b'Africa/Malabo'), (b'Africa/Maputo', b'Africa/Maputo'), (b'Africa/Maseru', b'Africa/Maseru'), (b'Africa/Mbabane', b'Africa/Mbabane'), (b'Africa/Mogadishu', b'Africa/Mogadishu'), (b'Africa/Monrovia', b'Africa/Monrovia'), (b'Africa/Nairobi', b'Africa/Nairobi'), (b'Africa/Ndjamena', b'Africa/Ndjamena'), (b'Africa/Niamey', b'Africa/Niamey'), (b'Africa/Nouakchott', b'Africa/Nouakchott'), (b'Africa/Ouagadougou', b'Africa/Ouagadougou'), (b'Africa/Porto-Novo', b'Africa/Porto-Novo'), (b'Africa/Sao_Tome', b'Africa/Sao_Tome'), (b'Africa/Tripoli', b'Africa/Tripoli'), (b'Africa/Tunis', b'Africa/Tunis'), (b'Africa/Windhoek', b'Africa/Windhoek'), (b'America/Adak', b'America/Adak'), (b'America/Anchorage', b'America/Anchorage'), (b'America/Anguilla', b'America/Anguilla'), (b'America/Antigua', b'America/Antigua'), (b'America/Araguaina', b'America/Araguaina'), (b'America/Argentina/Buenos_Aires', b'America/Argentina/Buenos_Aires'), (b'America/Argentina/Catamarca', b'America/Argentina/Catamarca'), (b'America/Argentina/Cordoba', b'America/Argentina/Cordoba'), (b'America/Argentina/Jujuy', b'America/Argentina/Jujuy'), (b'America/Argentina/La_Rioja', b'America/Argentina/La_Rioja'), (b'America/Argentina/Mendoza', b'America/Argentina/Mendoza'), (b'America/Argentina/Rio_Gallegos', b'America/Argentina/Rio_Gallegos'), (b'America/Argentina/Salta', b'America/Argentina/Salta'), (b'America/Argentina/San_Juan', b'America/Argentina/San_Juan'), (b'America/Argentina/San_Luis', b'America/Argentina/San_Luis'), (b'America/Argentina/Tucuman', b'America/Argentina/Tucuman'), (b'America/Argentina/Ushuaia', b'America/Argentina/Ushuaia'), (b'America/Aruba', b'America/Aruba'), (b'America/Asuncion', b'America/Asuncion'), (b'America/Atikokan', b'America/Atikokan'), (b'America/Bahia', b'America/Bahia'), (b'America/Bahia_Banderas', b'America/Bahia_Banderas'), (b'America/Barbados', b'America/Barbados'), (b'America/Belem', b'America/Belem'), (b'America/Belize', b'America/Belize'), (b'America/Blanc-Sablon', b'America/Blanc-Sablon'), (b'America/Boa_Vista', b'America/Boa_Vista'), (b'America/Bogota', b'America/Bogota'), (b'America/Boise', b'America/Boise'), (b'America/Cambridge_Bay', b'America/Cambridge_Bay'), (b'America/Campo_Grande', b'America/Campo_Grande'), (b'America/Cancun', b'America/Cancun'), (b'America/Caracas', b'America/Caracas'), (b'America/Cayenne', b'America/Cayenne'), (b'America/Cayman', b'America/Cayman'), (b'America/Chicago', b'America/Chicago'), (b'America/Chihuahua', b'America/Chihuahua'), (b'America/Costa_Rica', b'America/Costa_Rica'), (b'America/Creston', b'America/Creston'), (b'America/Cuiaba', b'America/Cuiaba'), (b'America/Curacao', b'America/Curacao'), (b'America/Danmarkshavn', b'America/Danmarkshavn'), (b'America/Dawson', b'America/Dawson'), (b'America/Dawson_Creek', b'America/Dawson_Creek'), (b'America/Denver', b'America/Denver'), (b'America/Detroit', b'America/Detroit'), (b'America/Dominica', b'America/Dominica'), (b'America/Edmonton', b'America/Edmonton'), (b'America/Eirunepe', b'America/Eirunepe'), (b'America/El_Salvador', b'America/El_Salvador'), (b'America/Fort_Nelson', b'America/Fort_Nelson'), (b'America/Fortaleza', b'America/Fortaleza'), (b'America/Glace_Bay', b'America/Glace_Bay'), (b'America/Godthab', b'America/Godthab'), (b'America/Goose_Bay', b'America/Goose_Bay'), (b'America/Grand_Turk', b'America/Grand_Turk'), (b'America/Grenada', b'America/Grenada'), (b'America/Guadeloupe', b'America/Guadeloupe'), (b'America/Guatemala', b'America/Guatemala'), (b'America/Guayaquil', b'America/Guayaquil'), (b'America/Guyana', b'America/Guyana'), (b'America/Halifax', b'America/Halifax'), (b'America/Havana', b'America/Havana'), (b'America/Hermosillo', b'America/Hermosillo'), (b'America/Indiana/Indianapolis', b'America/Indiana/Indianapolis'), (b'America/Indiana/Knox', b'America/Indiana/Knox'), (b'America/Indiana/Marengo', b'America/Indiana/Marengo'), (b'America/Indiana/Petersburg', b'America/Indiana/Petersburg'), (b'America/Indiana/Tell_City', b'America/Indiana/Tell_City'), (b'America/Indiana/Vevay', b'America/Indiana/Vevay'), (b'America/Indiana/Vincennes', b'America/Indiana/Vincennes'), (b'America/Indiana/Winamac', b'America/Indiana/Winamac'), (b'America/Inuvik', b'America/Inuvik'), (b'America/Iqaluit', b'America/Iqaluit'), (b'America/Jamaica', b'America/Jamaica'), (b'America/Juneau', b'America/Juneau'), (b'America/Kentucky/Louisville', b'America/Kentucky/Louisville'), (b'America/Kentucky/Monticello', b'America/Kentucky/Monticello'), (b'America/Kralendijk', b'America/Kralendijk'), (b'America/La_Paz', b'America/La_Paz'), (b'America/Lima', b'America/Lima'), (b'America/Los_Angeles', b'America/Los_Angeles'), (b'America/Lower_Princes', b'America/Lower_Princes'), (b'America/Maceio', b'America/Maceio'), (b'America/Managua', b'America/Managua'), (b'America/Manaus', b'America/Manaus'), (b'America/Marigot', b'America/Marigot'), (b'America/Martinique', b'America/Martinique'), (b'America/Matamoros', b'America/Matamoros'), (b'America/Mazatlan', b'America/Mazatlan'), (b'America/Menominee', b'America/Menominee'), (b'America/Merida', b'America/Merida'), (b'America/Metlakatla', b'America/Metlakatla'), (b'America/Mexico_City', b'America/Mexico_City'), (b'America/Miquelon', b'America/Miquelon'), (b'America/Moncton', b'America/Moncton'), (b'America/Monterrey', b'America/Monterrey'), (b'America/Montevideo', b'America/Montevideo'), (b'America/Montserrat', b'America/Montserrat'), (b'America/Nassau', b'America/Nassau'), (b'America/New_York', b'America/New_York'), (b'America/Nipigon', b'America/Nipigon'), (b'America/Nome', b'America/Nome'), (b'America/Noronha', b'America/Noronha'), (b'America/North_Dakota/Beulah', b'America/North_Dakota/Beulah'), (b'America/North_Dakota/Center', b'America/North_Dakota/Center'), (b'America/North_Dakota/New_Salem', b'America/North_Dakota/New_Salem'), (b'America/Ojinaga', b'America/Ojinaga'), (b'America/Panama', b'America/Panama'), (b'America/Pangnirtung', b'America/Pangnirtung'), (b'America/Paramaribo', b'America/Paramaribo'), (b'America/Phoenix', b'America/Phoenix'), (b'America/Port-au-Prince', b'America/Port-au-Prince'), (b'America/Port_of_Spain', b'America/Port_of_Spain'), (b'America/Porto_Velho', b'America/Porto_Velho'), (b'America/Puerto_Rico', b'America/Puerto_Rico'), (b'America/Punta_Arenas', b'America/Punta_Arenas'), (b'America/Rainy_River', b'America/Rainy_River'), (b'America/Rankin_Inlet', b'America/Rankin_Inlet'), (b'America/Recife', b'America/Recife'), (b'America/Regina', b'America/Regina'), (b'America/Resolute', b'America/Resolute'), (b'America/Rio_Branco', b'America/Rio_Branco'), (b'America/Santarem', b'America/Santarem'), (b'America/Santiago', b'America/Santiago'), (b'America/Santo_Domingo', b'America/Santo_Domingo'), (b'America/Sao_Paulo', b'America/Sao_Paulo'), (b'America/Scoresbysund', b'America/Scoresbysund'), (b'America/Sitka', b'America/Sitka'), (b'America/St_Barthelemy', b'America/St_Barthelemy'), (b'America/St_Johns', b'America/St_Johns'), (b'America/St_Kitts', b'America/St_Kitts'), (b'America/St_Lucia', b'America/St_Lucia'), (b'America/St_Thomas', b'America/St_Thomas'), (b'America/St_Vincent', b'America/St_Vincent'), (b'America/Swift_Current', b'America/Swift_Current'), (b'America/Tegucigalpa', b'America/Tegucigalpa'), (b'America/Thule', b'America/Thule'), (b'America/Thunder_Bay', b'America/Thunder_Bay'), (b'America/Tijuana', b'America/Tijuana'), (b'America/Toronto', b'America/Toronto'), (b'America/Tortola', b'America/Tortola'), (b'America/Vancouver', b'America/Vancouver'), (b'America/Whitehorse', b'America/Whitehorse'), (b'America/Winnipeg', b'America/Winnipeg'), (b'America/Yakutat', b'America/Yakutat'), (b'America/Yellowknife', b'America/Yellowknife'), (b'Antarctica/Casey', b'Antarctica/Casey'), (b'Antarctica/Davis', b'Antarctica/Davis'), (b'Antarctica/DumontDUrville', b'Antarctica/DumontDUrville'), (b'Antarctica/Macquarie', b'Antarctica/Macquarie'), (b'Antarctica/Mawson', b'Antarctica/Mawson'), (b'Antarctica/McMurdo', b'Antarctica/McMurdo'), (b'Antarctica/Palmer', b'Antarctica/Palmer'), (b'Antarctica/Rothera', b'Antarctica/Rothera'), (b'Antarctica/Syowa', b'Antarctica/Syowa'), (b'Antarctica/Troll', b'Antarctica/Troll'), (b'Antarctica/Vostok', b'Antarctica/Vostok'), (b'Arctic/Longyearbyen', b'Arctic/Longyearbyen'), (b'Asia/Aden', b'Asia/Aden'), (b'Asia/Almaty', b'Asia/Almaty'), (b'Asia/Amman', b'Asia/Amman'), (b'Asia/Anadyr', b'Asia/Anadyr'), (b'Asia/Aqtau', b'Asia/Aqtau'), (b'Asia/Aqtobe', b'Asia/Aqtobe'), (b'Asia/Ashgabat', b'Asia/Ashgabat'), (b'Asia/Atyrau', b'Asia/Atyrau'), (b'Asia/Baghdad', b'Asia/Baghdad'), (b'Asia/Bahrain', b'Asia/Bahrain'), (b'Asia/Baku', b'Asia/Baku'), (b'Asia/Bangkok', b'Asia/Bangkok'), (b'Asia/Barnaul', b'Asia/Barnaul'), (b'Asia/Beirut', b'Asia/Beirut'), (b'Asia/Bishkek', b'Asia/Bishkek'), (b'Asia/Brunei', b'Asia/Brunei'), (b'Asia/Chita', b'Asia/Chita'), (b'Asia/Choibalsan', b'Asia/Choibalsan'), (b'Asia/Colombo', b'Asia/Colombo'), (b'Asia/Damascus', b'Asia/Damascus'), (b'Asia/Dhaka', b'Asia/Dhaka'), (b'Asia/Dili', b'Asia/Dili'), (b'Asia/Dubai', b'Asia/Dubai'), (b'Asia/Dushanbe', b'Asia/Dushanbe'), (b'Asia/Famagusta', b'Asia/Famagusta'), (b'Asia/Gaza', b'Asia/Gaza'), (b'Asia/Hebron', b'Asia/Hebron'), (b'Asia/Ho_Chi_Minh', b'Asia/Ho_Chi_Minh'), (b'Asia/Hong_Kong', b'Asia/Hong_Kong'), (b'Asia/Hovd', b'Asia/Hovd'), (b'Asia/Irkutsk', b'Asia/Irkutsk'), (b'Asia/Jakarta', b'Asia/Jakarta'), (b'Asia/Jayapura', b'Asia/Jayapura'), (b'Asia/Jerusalem', b'Asia/Jerusalem'), (b'Asia/Kabul', b'Asia/Kabul'), (b'Asia/Kamchatka', b'Asia/Kamchatka'), (b'Asia/Karachi', b'Asia/Karachi'), (b'Asia/Kathmandu', b'Asia/Kathmandu'), (b'Asia/Khandyga', b'Asia/Khandyga'), (b'Asia/Kolkata', b'Asia/Kolkata'), (b'Asia/Krasnoyarsk', b'Asia/Krasnoyarsk'), (b'Asia/Kuala_Lumpur', b'Asia/Kuala_Lumpur'), (b'Asia/Kuching', b'Asia/Kuching'), (b'Asia/Kuwait', b'Asia/Kuwait'), (b'Asia/Macau', b'Asia/Macau'), (b'Asia/Magadan', b'Asia/Magadan'), (b'Asia/Makassar', b'Asia/Makassar'), (b'Asia/Manila', b'Asia/Manila'), (b'Asia/Muscat', b'Asia/Muscat'), (b'Asia/Nicosia', b'Asia/Nicosia'), (b'Asia/Novokuznetsk', b'Asia/Novokuznetsk'), (b'Asia/Novosibirsk', b'Asia/Novosibirsk'), (b'Asia/Omsk', b'Asia/Omsk'), (b'Asia/Oral', b'Asia/Oral'), (b'Asia/Phnom_Penh', b'Asia/Phnom_Penh'), (b'Asia/Pontianak', b'Asia/Pontianak'), (b'Asia/Pyongyang', b'Asia/Pyongyang'), (b'Asia/Qatar', b'Asia/Qatar'), (b'Asia/Qyzylorda', b'Asia/Qyzylorda'), (b'Asia/Riyadh', b'Asia/Riyadh'), (b'Asia/Sakhalin', b'Asia/Sakhalin'), (b'Asia/Samarkand', b'Asia/Samarkand'), (b'Asia/Seoul', b'Asia/Seoul'), (b'Asia/Shanghai', b'Asia/Shanghai'), (b'Asia/Singapore', b'Asia/Singapore'), (b'Asia/Srednekolymsk', b'Asia/Srednekolymsk'), (b'Asia/Taipei', b'Asia/Taipei'), (b'Asia/Tashkent', b'Asia/Tashkent'), (b'Asia/Tbilisi', b'Asia/Tbilisi'), (b'Asia/Tehran', b'Asia/Tehran'), (b'Asia/Thimphu', b'Asia/Thimphu'), (b'Asia/Tokyo', b'Asia/Tokyo'), (b'Asia/Tomsk', b'Asia/Tomsk'), (b'Asia/Ulaanbaatar', b'Asia/Ulaanbaatar'), (b'Asia/Urumqi', b'Asia/Urumqi'), (b'Asia/Ust-Nera', b'Asia/Ust-Nera'), (b'Asia/Vientiane', b'Asia/Vientiane'), (b'Asia/Vladivostok', b'Asia/Vladivostok'), (b'Asia/Yakutsk', b'Asia/Yakutsk'), (b'Asia/Yangon', b'Asia/Yangon'), (b'Asia/Yekaterinburg', b'Asia/Yekaterinburg'), (b'Asia/Yerevan', b'Asia/Yerevan'), (b'Atlantic/Azores', b'Atlantic/Azores'), (b'Atlantic/Bermuda', b'Atlantic/Bermuda'), (b'Atlantic/Canary', b'Atlantic/Canary'), (b'Atlantic/Cape_Verde', b'Atlantic/Cape_Verde'), (b'Atlantic/Faroe', b'Atlantic/Faroe'), (b'Atlantic/Madeira', b'Atlantic/Madeira'), (b'Atlantic/Reykjavik', b'Atlantic/Reykjavik'), (b'Atlantic/South_Georgia', b'Atlantic/South_Georgia'), (b'Atlantic/St_Helena', b'Atlantic/St_Helena'), (b'Atlantic/Stanley', b'Atlantic/Stanley'), (b'Australia/Adelaide', b'Australia/Adelaide'), (b'Australia/Brisbane', b'Australia/Brisbane'), (b'Australia/Broken_Hill', b'Australia/Broken_Hill'), (b'Australia/Currie', b'Australia/Currie'), (b'Australia/Darwin', b'Australia/Darwin'), (b'Australia/Eucla', b'Australia/Eucla'), (b'Australia/Hobart', b'Australia/Hobart'), (b'Australia/Lindeman', b'Australia/Lindeman'), (b'Australia/Lord_Howe', b'Australia/Lord_Howe'), (b'Australia/Melbourne', b'Australia/Melbourne'), (b'Australia/Perth', b'Australia/Perth'), (b'Australia/Sydney', b'Australia/Sydney'), (b'Canada/Atlantic', b'Canada/Atlantic'), (b'Canada/Central', b'Canada/Central'), (b'Canada/Eastern', b'Canada/Eastern'), (b'Canada/Mountain', b'Canada/Mountain'), (b'Canada/Newfoundland', b'Canada/Newfoundland'), (b'Canada/Pacific', b'Canada/Pacific'), (b'Europe/Amsterdam', b'Europe/Amsterdam'), (b'Europe/Andorra', b'Europe/Andorra'), (b'Europe/Astrakhan', b'Europe/Astrakhan'), (b'Europe/Athens', b'Europe/Athens'), (b'Europe/Belgrade', b'Europe/Belgrade'), (b'Europe/Berlin', b'Europe/Berlin'), (b'Europe/Bratislava', b'Europe/Bratislava'), (b'Europe/Brussels', b'Europe/Brussels'), (b'Europe/Bucharest', b'Europe/Bucharest'), (b'Europe/Budapest', b'Europe/Budapest'), (b'Europe/Busingen', b'Europe/Busingen'), (b'Europe/Chisinau', b'Europe/Chisinau'), (b'Europe/Copenhagen', b'Europe/Copenhagen'), (b'Europe/Dublin', b'Europe/Dublin'), (b'Europe/Gibraltar', b'Europe/Gibraltar'), (b'Europe/Guernsey', b'Europe/Guernsey'), (b'Europe/Helsinki', b'Europe/Helsinki'), (b'Europe/Isle_of_Man', b'Europe/Isle_of_Man'), (b'Europe/Istanbul', b'Europe/Istanbul'), (b'Europe/Jersey', b'Europe/Jersey'), (b'Europe/Kaliningrad', b'Europe/Kaliningrad'), (b'Europe/Kiev', b'Europe/Kiev'), (b'Europe/Kirov', b'Europe/Kirov'), (b'Europe/Lisbon', b'Europe/Lisbon'), (b'Europe/Ljubljana', b'Europe/Ljubljana'), (b'Europe/London', b'Europe/London'), (b'Europe/Luxembourg', b'Europe/Luxembourg'), (b'Europe/Madrid', b'Europe/Madrid'), (b'Europe/Malta', b'Europe/Malta'), (b'Europe/Mariehamn', b'Europe/Mariehamn'), (b'Europe/Minsk', b'Europe/Minsk'), (b'Europe/Monaco', b'Europe/Monaco'), (b'Europe/Moscow', b'Europe/Moscow'), (b'Europe/Oslo', b'Europe/Oslo'), (b'Europe/Paris', b'Europe/Paris'), (b'Europe/Podgorica', b'Europe/Podgorica'), (b'Europe/Prague', b'Europe/Prague'), (b'Europe/Riga', b'Europe/Riga'), (b'Europe/Rome', b'Europe/Rome'), (b'Europe/Samara', b'Europe/Samara'), (b'Europe/San_Marino', b'Europe/San_Marino'), (b'Europe/Sarajevo', b'Europe/Sarajevo'), (b'Europe/Saratov', b'Europe/Saratov'), (b'Europe/Simferopol', b'Europe/Simferopol'), (b'Europe/Skopje', b'Europe/Skopje'), (b'Europe/Sofia', b'Europe/Sofia'), (b'Europe/Stockholm', b'Europe/Stockholm'), (b'Europe/Tallinn', b'Europe/Tallinn'), (b'Europe/Tirane', b'Europe/Tirane'), (b'Europe/Ulyanovsk', b'Europe/Ulyanovsk'), (b'Europe/Uzhgorod', b'Europe/Uzhgorod'), (b'Europe/Vaduz', b'Europe/Vaduz'), (b'Europe/Vatican', b'Europe/Vatican'), (b'Europe/Vienna', b'Europe/Vienna'), (b'Europe/Vilnius', b'Europe/Vilnius'), (b'Europe/Volgograd', b'Europe/Volgograd'), (b'Europe/Warsaw', b'Europe/Warsaw'), (b'Europe/Zagreb', b'Europe/Zagreb'), (b'Europe/Zaporozhye', b'Europe/Zaporozhye'), (b'Europe/Zurich', b'Europe/Zurich'), (b'GMT', b'GMT'), (b'Indian/Antananarivo', b'Indian/Antananarivo'), (b'Indian/Chagos', b'Indian/Chagos'), (b'Indian/Christmas', b'Indian/Christmas'), (b'Indian/Cocos', b'Indian/Cocos'), (b'Indian/Comoro', b'Indian/Comoro'), (b'Indian/Kerguelen', b'Indian/Kerguelen'), (b'Indian/Mahe', b'Indian/Mahe'), (b'Indian/Maldives', b'Indian/Maldives'), (b'Indian/Mauritius', b'Indian/Mauritius'), (b'Indian/Mayotte', b'Indian/Mayotte'), (b'Indian/Reunion', b'Indian/Reunion'), (b'Pacific/Apia', b'Pacific/Apia'), (b'Pacific/Auckland', b'Pacific/Auckland'), (b'Pacific/Bougainville', b'Pacific/Bougainville'), (b'Pacific/Chatham', b'Pacific/Chatham'), (b'Pacific/Chuuk', b'Pacific/Chuuk'), (b'Pacific/Easter', b'Pacific/Easter'), (b'Pacific/Efate', b'Pacific/Efate'), (b'Pacific/Enderbury', b'Pacific/Enderbury'), (b'Pacific/Fakaofo', b'Pacific/Fakaofo'), (b'Pacific/Fiji', b'Pacific/Fiji'), (b'Pacific/Funafuti', b'Pacific/Funafuti'), (b'Pacific/Galapagos', b'Pacific/Galapagos'), (b'Pacific/Gambier', b'Pacific/Gambier'), (b'Pacific/Guadalcanal', b'Pacific/Guadalcanal'), (b'Pacific/Guam', b'Pacific/Guam'), (b'Pacific/Honolulu', b'Pacific/Honolulu'), (b'Pacific/Kiritimati', b'Pacific/Kiritimati'), (b'Pacific/Kosrae', b'Pacific/Kosrae'), (b'Pacific/Kwajalein', b'Pacific/Kwajalein'), (b'Pacific/Majuro', b'Pacific/Majuro'), (b'Pacific/Marquesas', b'Pacific/Marquesas'), (b'Pacific/Midway', b'Pacific/Midway'), (b'Pacific/Nauru', b'Pacific/Nauru'), (b'Pacific/Niue', b'Pacific/Niue'), (b'Pacific/Norfolk', b'Pacific/Norfolk'), (b'Pacific/Noumea', b'Pacific/Noumea'), (b'Pacific/Pago_Pago', b'Pacific/Pago_Pago'), (b'Pacific/Palau', b'Pacific/Palau'), (b'Pacific/Pitcairn', b'Pacific/Pitcairn'), (b'Pacific/Pohnpei', b'Pacific/Pohnpei'), (b'Pacific/Port_Moresby', b'Pacific/Port_Moresby'), (b'Pacific/Rarotonga', b'Pacific/Rarotonga'), (b'Pacific/Saipan', b'Pacific/Saipan'), (b'Pacific/Tahiti', b'Pacific/Tahiti'), (b'Pacific/Tarawa', b'Pacific/Tarawa'), (b'Pacific/Tongatapu', b'Pacific/Tongatapu'), (b'Pacific/Wake', b'Pacific/Wake'), (b'Pacific/Wallis', b'Pacific/Wallis'), (b'US/Alaska', b'US/Alaska'), (b'US/Arizona', b'US/Arizona'), (b'US/Central', b'US/Central'), (b'US/Eastern', b'US/Eastern'), (b'US/Hawaii', b'US/Hawaii'), (b'US/Mountain', b'US/Mountain'), (b'US/Pacific', b'US/Pacific'), (b'UTC', b'UTC')], max_length=48, verbose_name='Timezone'),
+            field=models.CharField(
+                choices=[
+                    (b'Africa/Abidjan', b'Africa/Abidjan'),
+                    (b'Africa/Accra', b'Africa/Accra'),
+                    (b'Africa/Addis_Ababa', b'Africa/Addis_Ababa'),
+                    (b'Africa/Algiers', b'Africa/Algiers'),
+                    (b'Africa/Asmara', b'Africa/Asmara'),
+                    (b'Africa/Bamako', b'Africa/Bamako'),
+                    (b'Africa/Bangui', b'Africa/Bangui'),
+                    (b'Africa/Banjul', b'Africa/Banjul'),
+                    (b'Africa/Bissau', b'Africa/Bissau'),
+                    (b'Africa/Blantyre', b'Africa/Blantyre'),
+                    (b'Africa/Brazzaville', b'Africa/Brazzaville'),
+                    (b'Africa/Bujumbura', b'Africa/Bujumbura'),
+                    (b'Africa/Cairo', b'Africa/Cairo'),
+                    (b'Africa/Casablanca', b'Africa/Casablanca'),
+                    (b'Africa/Ceuta', b'Africa/Ceuta'),
+                    (b'Africa/Conakry', b'Africa/Conakry'),
+                    (b'Africa/Dakar', b'Africa/Dakar'),
+                    (b'Africa/Dar_es_Salaam', b'Africa/Dar_es_Salaam'),
+                    (b'Africa/Djibouti', b'Africa/Djibouti'),
+                    (b'Africa/Douala', b'Africa/Douala'),
+                    (b'Africa/El_Aaiun', b'Africa/El_Aaiun'),
+                    (b'Africa/Freetown', b'Africa/Freetown'),
+                    (b'Africa/Gaborone', b'Africa/Gaborone'),
+                    (b'Africa/Harare', b'Africa/Harare'),
+                    (b'Africa/Johannesburg', b'Africa/Johannesburg'),
+                    (b'Africa/Juba', b'Africa/Juba'),
+                    (b'Africa/Kampala', b'Africa/Kampala'),
+                    (b'Africa/Khartoum', b'Africa/Khartoum'),
+                    (b'Africa/Kigali', b'Africa/Kigali'),
+                    (b'Africa/Kinshasa', b'Africa/Kinshasa'),
+                    (b'Africa/Lagos', b'Africa/Lagos'),
+                    (b'Africa/Libreville', b'Africa/Libreville'),
+                    (b'Africa/Lome', b'Africa/Lome'),
+                    (b'Africa/Luanda', b'Africa/Luanda'),
+                    (b'Africa/Lubumbashi', b'Africa/Lubumbashi'),
+                    (b'Africa/Lusaka', b'Africa/Lusaka'),
+                    (b'Africa/Malabo', b'Africa/Malabo'),
+                    (b'Africa/Maputo', b'Africa/Maputo'),
+                    (b'Africa/Maseru', b'Africa/Maseru'),
+                    (b'Africa/Mbabane', b'Africa/Mbabane'),
+                    (b'Africa/Mogadishu', b'Africa/Mogadishu'),
+                    (b'Africa/Monrovia', b'Africa/Monrovia'),
+                    (b'Africa/Nairobi', b'Africa/Nairobi'),
+                    (b'Africa/Ndjamena', b'Africa/Ndjamena'),
+                    (b'Africa/Niamey', b'Africa/Niamey'),
+                    (b'Africa/Nouakchott', b'Africa/Nouakchott'),
+                    (b'Africa/Ouagadougou', b'Africa/Ouagadougou'),
+                    (b'Africa/Porto-Novo', b'Africa/Porto-Novo'),
+                    (b'Africa/Sao_Tome', b'Africa/Sao_Tome'),
+                    (b'Africa/Tripoli', b'Africa/Tripoli'),
+                    (b'Africa/Tunis', b'Africa/Tunis'),
+                    (b'Africa/Windhoek', b'Africa/Windhoek'),
+                    (b'America/Adak', b'America/Adak'),
+                    (b'America/Anchorage', b'America/Anchorage'),
+                    (b'America/Anguilla', b'America/Anguilla'),
+                    (b'America/Antigua', b'America/Antigua'),
+                    (b'America/Araguaina', b'America/Araguaina'),
+                    (
+                        b'America/Argentina/Buenos_Aires',
+                        b'America/Argentina/Buenos_Aires'
+                    ),
+                    (
+                        b'America/Argentina/Catamarca',
+                        b'America/Argentina/Catamarca'
+                    ),
+                    (
+                        b'America/Argentina/Cordoba',
+                        b'America/Argentina/Cordoba'
+                    ),
+                    (b'America/Argentina/Jujuy', b'America/Argentina/Jujuy'),
+                    (
+                        b'America/Argentina/La_Rioja',
+                        b'America/Argentina/La_Rioja'
+                    ),
+                    (
+                        b'America/Argentina/Mendoza',
+                        b'America/Argentina/Mendoza'
+                    ),
+                    (
+                        b'America/Argentina/Rio_Gallegos',
+                        b'America/Argentina/Rio_Gallegos'
+                    ),
+                    (b'America/Argentina/Salta', b'America/Argentina/Salta'),
+                    (
+                        b'America/Argentina/San_Juan',
+                        b'America/Argentina/San_Juan'
+                    ),
+                    (
+                        b'America/Argentina/San_Luis',
+                        b'America/Argentina/San_Luis'
+                    ),
+                    (
+                        b'America/Argentina/Tucuman',
+                        b'America/Argentina/Tucuman'
+                    ),
+                    (
+                        b'America/Argentina/Ushuaia',
+                        b'America/Argentina/Ushuaia'
+                    ),
+                    (b'America/Aruba', b'America/Aruba'),
+                    (b'America/Asuncion', b'America/Asuncion'),
+                    (b'America/Atikokan', b'America/Atikokan'),
+                    (b'America/Bahia', b'America/Bahia'),
+                    (b'America/Bahia_Banderas', b'America/Bahia_Banderas'),
+                    (b'America/Barbados', b'America/Barbados'),
+                    (b'America/Belem', b'America/Belem'),
+                    (b'America/Belize', b'America/Belize'),
+                    (b'America/Blanc-Sablon', b'America/Blanc-Sablon'),
+                    (b'America/Boa_Vista', b'America/Boa_Vista'),
+                    (b'America/Bogota', b'America/Bogota'),
+                    (b'America/Boise', b'America/Boise'),
+                    (b'America/Cambridge_Bay', b'America/Cambridge_Bay'),
+                    (b'America/Campo_Grande', b'America/Campo_Grande'),
+                    (b'America/Cancun', b'America/Cancun'),
+                    (b'America/Caracas', b'America/Caracas'),
+                    (b'America/Cayenne', b'America/Cayenne'),
+                    (b'America/Cayman', b'America/Cayman'),
+                    (b'America/Chicago', b'America/Chicago'),
+                    (b'America/Chihuahua', b'America/Chihuahua'),
+                    (b'America/Costa_Rica', b'America/Costa_Rica'),
+                    (b'America/Creston', b'America/Creston'),
+                    (b'America/Cuiaba', b'America/Cuiaba'),
+                    (b'America/Curacao', b'America/Curacao'),
+                    (b'America/Danmarkshavn', b'America/Danmarkshavn'),
+                    (b'America/Dawson', b'America/Dawson'),
+                    (b'America/Dawson_Creek', b'America/Dawson_Creek'),
+                    (b'America/Denver', b'America/Denver'),
+                    (b'America/Detroit', b'America/Detroit'),
+                    (b'America/Dominica', b'America/Dominica'),
+                    (b'America/Edmonton', b'America/Edmonton'),
+                    (b'America/Eirunepe', b'America/Eirunepe'),
+                    (b'America/El_Salvador', b'America/El_Salvador'),
+                    (b'America/Fort_Nelson', b'America/Fort_Nelson'),
+                    (b'America/Fortaleza', b'America/Fortaleza'),
+                    (b'America/Glace_Bay', b'America/Glace_Bay'),
+                    (b'America/Godthab', b'America/Godthab'),
+                    (b'America/Goose_Bay', b'America/Goose_Bay'),
+                    (b'America/Grand_Turk', b'America/Grand_Turk'),
+                    (b'America/Grenada', b'America/Grenada'),
+                    (b'America/Guadeloupe', b'America/Guadeloupe'),
+                    (b'America/Guatemala', b'America/Guatemala'),
+                    (b'America/Guayaquil', b'America/Guayaquil'),
+                    (b'America/Guyana', b'America/Guyana'),
+                    (b'America/Halifax', b'America/Halifax'),
+                    (b'America/Havana', b'America/Havana'),
+                    (b'America/Hermosillo', b'America/Hermosillo'),
+                    (
+                        b'America/Indiana/Indianapolis',
+                        b'America/Indiana/Indianapolis'
+                    ),
+                    (b'America/Indiana/Knox', b'America/Indiana/Knox'),
+                    (b'America/Indiana/Marengo', b'America/Indiana/Marengo'),
+                    (
+                        b'America/Indiana/Petersburg',
+                        b'America/Indiana/Petersburg'
+                    ),
+                    (
+                        b'America/Indiana/Tell_City',
+                        b'America/Indiana/Tell_City'
+                    ),
+                    (b'America/Indiana/Vevay', b'America/Indiana/Vevay'),
+                    (
+                        b'America/Indiana/Vincennes',
+                        b'America/Indiana/Vincennes'
+                    ),
+                    (b'America/Indiana/Winamac', b'America/Indiana/Winamac'),
+                    (b'America/Inuvik', b'America/Inuvik'),
+                    (b'America/Iqaluit', b'America/Iqaluit'),
+                    (b'America/Jamaica', b'America/Jamaica'),
+                    (b'America/Juneau', b'America/Juneau'),
+                    (
+                        b'America/Kentucky/Louisville',
+                        b'America/Kentucky/Louisville'
+                    ),
+                    (
+                        b'America/Kentucky/Monticello',
+                        b'America/Kentucky/Monticello'
+                    ),
+                    (b'America/Kralendijk', b'America/Kralendijk'),
+                    (b'America/La_Paz', b'America/La_Paz'),
+                    (b'America/Lima', b'America/Lima'),
+                    (b'America/Los_Angeles', b'America/Los_Angeles'),
+                    (b'America/Lower_Princes', b'America/Lower_Princes'),
+                    (b'America/Maceio', b'America/Maceio'),
+                    (b'America/Managua', b'America/Managua'),
+                    (b'America/Manaus', b'America/Manaus'),
+                    (b'America/Marigot', b'America/Marigot'),
+                    (b'America/Martinique', b'America/Martinique'),
+                    (b'America/Matamoros', b'America/Matamoros'),
+                    (b'America/Mazatlan', b'America/Mazatlan'),
+                    (b'America/Menominee', b'America/Menominee'),
+                    (b'America/Merida', b'America/Merida'),
+                    (b'America/Metlakatla', b'America/Metlakatla'),
+                    (b'America/Mexico_City', b'America/Mexico_City'),
+                    (b'America/Miquelon', b'America/Miquelon'),
+                    (b'America/Moncton', b'America/Moncton'),
+                    (b'America/Monterrey', b'America/Monterrey'),
+                    (b'America/Montevideo', b'America/Montevideo'),
+                    (b'America/Montserrat', b'America/Montserrat'),
+                    (b'America/Nassau', b'America/Nassau'),
+                    (b'America/New_York', b'America/New_York'),
+                    (b'America/Nipigon', b'America/Nipigon'),
+                    (b'America/Nome', b'America/Nome'),
+                    (b'America/Noronha', b'America/Noronha'),
+                    (
+                        b'America/North_Dakota/Beulah',
+                        b'America/North_Dakota/Beulah'
+                    ),
+                    (
+                        b'America/North_Dakota/Center',
+                        b'America/North_Dakota/Center'
+                    ),
+                    (
+                        b'America/North_Dakota/New_Salem',
+                        b'America/North_Dakota/New_Salem'
+                    ),
+                    (b'America/Ojinaga', b'America/Ojinaga'),
+                    (b'America/Panama', b'America/Panama'),
+                    (b'America/Pangnirtung', b'America/Pangnirtung'),
+                    (b'America/Paramaribo', b'America/Paramaribo'),
+                    (b'America/Phoenix', b'America/Phoenix'),
+                    (b'America/Port-au-Prince', b'America/Port-au-Prince'),
+                    (b'America/Port_of_Spain', b'America/Port_of_Spain'),
+                    (b'America/Porto_Velho', b'America/Porto_Velho'),
+                    (b'America/Puerto_Rico', b'America/Puerto_Rico'),
+                    (b'America/Punta_Arenas', b'America/Punta_Arenas'),
+                    (b'America/Rainy_River', b'America/Rainy_River'),
+                    (b'America/Rankin_Inlet', b'America/Rankin_Inlet'),
+                    (b'America/Recife', b'America/Recife'),
+                    (b'America/Regina', b'America/Regina'),
+                    (b'America/Resolute', b'America/Resolute'),
+                    (b'America/Rio_Branco', b'America/Rio_Branco'),
+                    (b'America/Santarem', b'America/Santarem'),
+                    (b'America/Santiago', b'America/Santiago'),
+                    (b'America/Santo_Domingo', b'America/Santo_Domingo'),
+                    (b'America/Sao_Paulo', b'America/Sao_Paulo'),
+                    (b'America/Scoresbysund', b'America/Scoresbysund'),
+                    (b'America/Sitka', b'America/Sitka'),
+                    (b'America/St_Barthelemy', b'America/St_Barthelemy'),
+                    (b'America/St_Johns', b'America/St_Johns'),
+                    (b'America/St_Kitts', b'America/St_Kitts'),
+                    (b'America/St_Lucia', b'America/St_Lucia'),
+                    (b'America/St_Thomas', b'America/St_Thomas'),
+                    (b'America/St_Vincent', b'America/St_Vincent'),
+                    (b'America/Swift_Current', b'America/Swift_Current'),
+                    (b'America/Tegucigalpa', b'America/Tegucigalpa'),
+                    (b'America/Thule', b'America/Thule'),
+                    (b'America/Thunder_Bay', b'America/Thunder_Bay'),
+                    (b'America/Tijuana', b'America/Tijuana'),
+                    (b'America/Toronto', b'America/Toronto'),
+                    (b'America/Tortola', b'America/Tortola'),
+                    (b'America/Vancouver', b'America/Vancouver'),
+                    (b'America/Whitehorse', b'America/Whitehorse'),
+                    (b'America/Winnipeg', b'America/Winnipeg'),
+                    (b'America/Yakutat', b'America/Yakutat'),
+                    (b'America/Yellowknife', b'America/Yellowknife'),
+                    (b'Antarctica/Casey', b'Antarctica/Casey'),
+                    (b'Antarctica/Davis', b'Antarctica/Davis'),
+                    (
+                        b'Antarctica/DumontDUrville',
+                        b'Antarctica/DumontDUrville'
+                    ),
+                    (b'Antarctica/Macquarie', b'Antarctica/Macquarie'),
+                    (b'Antarctica/Mawson', b'Antarctica/Mawson'),
+                    (b'Antarctica/McMurdo', b'Antarctica/McMurdo'),
+                    (b'Antarctica/Palmer', b'Antarctica/Palmer'),
+                    (b'Antarctica/Rothera', b'Antarctica/Rothera'),
+                    (b'Antarctica/Syowa', b'Antarctica/Syowa'),
+                    (b'Antarctica/Troll', b'Antarctica/Troll'),
+                    (b'Antarctica/Vostok', b'Antarctica/Vostok'),
+                    (b'Arctic/Longyearbyen', b'Arctic/Longyearbyen'),
+                    (b'Asia/Aden', b'Asia/Aden'),
+                    (b'Asia/Almaty', b'Asia/Almaty'),
+                    (b'Asia/Amman', b'Asia/Amman'),
+                    (b'Asia/Anadyr', b'Asia/Anadyr'),
+                    (b'Asia/Aqtau', b'Asia/Aqtau'),
+                    (b'Asia/Aqtobe', b'Asia/Aqtobe'),
+                    (b'Asia/Ashgabat', b'Asia/Ashgabat'),
+                    (b'Asia/Atyrau', b'Asia/Atyrau'),
+                    (b'Asia/Baghdad', b'Asia/Baghdad'),
+                    (b'Asia/Bahrain', b'Asia/Bahrain'),
+                    (b'Asia/Baku', b'Asia/Baku'),
+                    (b'Asia/Bangkok', b'Asia/Bangkok'),
+                    (b'Asia/Barnaul', b'Asia/Barnaul'),
+                    (b'Asia/Beirut', b'Asia/Beirut'),
+                    (b'Asia/Bishkek', b'Asia/Bishkek'),
+                    (b'Asia/Brunei', b'Asia/Brunei'),
+                    (b'Asia/Chita', b'Asia/Chita'),
+                    (b'Asia/Choibalsan', b'Asia/Choibalsan'),
+                    (b'Asia/Colombo', b'Asia/Colombo'),
+                    (b'Asia/Damascus', b'Asia/Damascus'),
+                    (b'Asia/Dhaka', b'Asia/Dhaka'),
+                    (b'Asia/Dili', b'Asia/Dili'),
+                    (b'Asia/Dubai', b'Asia/Dubai'),
+                    (b'Asia/Dushanbe', b'Asia/Dushanbe'),
+                    (b'Asia/Famagusta', b'Asia/Famagusta'),
+                    (b'Asia/Gaza', b'Asia/Gaza'),
+                    (b'Asia/Hebron', b'Asia/Hebron'),
+                    (b'Asia/Ho_Chi_Minh', b'Asia/Ho_Chi_Minh'),
+                    (b'Asia/Hong_Kong', b'Asia/Hong_Kong'),
+                    (b'Asia/Hovd', b'Asia/Hovd'),
+                    (b'Asia/Irkutsk', b'Asia/Irkutsk'),
+                    (b'Asia/Jakarta', b'Asia/Jakarta'),
+                    (b'Asia/Jayapura', b'Asia/Jayapura'),
+                    (b'Asia/Jerusalem', b'Asia/Jerusalem'),
+                    (b'Asia/Kabul', b'Asia/Kabul'),
+                    (b'Asia/Kamchatka', b'Asia/Kamchatka'),
+                    (b'Asia/Karachi', b'Asia/Karachi'),
+                    (b'Asia/Kathmandu', b'Asia/Kathmandu'),
+                    (b'Asia/Khandyga', b'Asia/Khandyga'),
+                    (b'Asia/Kolkata', b'Asia/Kolkata'),
+                    (b'Asia/Krasnoyarsk', b'Asia/Krasnoyarsk'),
+                    (b'Asia/Kuala_Lumpur', b'Asia/Kuala_Lumpur'),
+                    (b'Asia/Kuching', b'Asia/Kuching'),
+                    (b'Asia/Kuwait', b'Asia/Kuwait'),
+                    (b'Asia/Macau', b'Asia/Macau'),
+                    (b'Asia/Magadan', b'Asia/Magadan'),
+                    (b'Asia/Makassar', b'Asia/Makassar'),
+                    (b'Asia/Manila', b'Asia/Manila'),
+                    (b'Asia/Muscat', b'Asia/Muscat'),
+                    (b'Asia/Nicosia', b'Asia/Nicosia'),
+                    (b'Asia/Novokuznetsk', b'Asia/Novokuznetsk'),
+                    (b'Asia/Novosibirsk', b'Asia/Novosibirsk'),
+                    (b'Asia/Omsk', b'Asia/Omsk'),
+                    (b'Asia/Oral', b'Asia/Oral'),
+                    (b'Asia/Phnom_Penh', b'Asia/Phnom_Penh'),
+                    (b'Asia/Pontianak', b'Asia/Pontianak'),
+                    (b'Asia/Pyongyang', b'Asia/Pyongyang'),
+                    (b'Asia/Qatar', b'Asia/Qatar'),
+                    (b'Asia/Qyzylorda', b'Asia/Qyzylorda'),
+                    (b'Asia/Riyadh', b'Asia/Riyadh'),
+                    (b'Asia/Sakhalin', b'Asia/Sakhalin'),
+                    (b'Asia/Samarkand', b'Asia/Samarkand'),
+                    (b'Asia/Seoul', b'Asia/Seoul'),
+                    (b'Asia/Shanghai', b'Asia/Shanghai'),
+                    (b'Asia/Singapore', b'Asia/Singapore'),
+                    (b'Asia/Srednekolymsk', b'Asia/Srednekolymsk'),
+                    (b'Asia/Taipei', b'Asia/Taipei'),
+                    (b'Asia/Tashkent', b'Asia/Tashkent'),
+                    (b'Asia/Tbilisi', b'Asia/Tbilisi'),
+                    (b'Asia/Tehran', b'Asia/Tehran'),
+                    (b'Asia/Thimphu', b'Asia/Thimphu'),
+                    (b'Asia/Tokyo', b'Asia/Tokyo'),
+                    (b'Asia/Tomsk', b'Asia/Tomsk'),
+                    (b'Asia/Ulaanbaatar', b'Asia/Ulaanbaatar'),
+                    (b'Asia/Urumqi', b'Asia/Urumqi'),
+                    (b'Asia/Ust-Nera', b'Asia/Ust-Nera'),
+                    (b'Asia/Vientiane', b'Asia/Vientiane'),
+                    (b'Asia/Vladivostok', b'Asia/Vladivostok'),
+                    (b'Asia/Yakutsk', b'Asia/Yakutsk'),
+                    (b'Asia/Yangon', b'Asia/Yangon'),
+                    (b'Asia/Yekaterinburg', b'Asia/Yekaterinburg'),
+                    (b'Asia/Yerevan', b'Asia/Yerevan'),
+                    (b'Atlantic/Azores', b'Atlantic/Azores'),
+                    (b'Atlantic/Bermuda', b'Atlantic/Bermuda'),
+                    (b'Atlantic/Canary', b'Atlantic/Canary'),
+                    (b'Atlantic/Cape_Verde', b'Atlantic/Cape_Verde'),
+                    (b'Atlantic/Faroe', b'Atlantic/Faroe'),
+                    (b'Atlantic/Madeira', b'Atlantic/Madeira'),
+                    (b'Atlantic/Reykjavik', b'Atlantic/Reykjavik'),
+                    (b'Atlantic/South_Georgia', b'Atlantic/South_Georgia'),
+                    (b'Atlantic/St_Helena', b'Atlantic/St_Helena'),
+                    (b'Atlantic/Stanley', b'Atlantic/Stanley'),
+                    (b'Australia/Adelaide', b'Australia/Adelaide'),
+                    (b'Australia/Brisbane', b'Australia/Brisbane'),
+                    (b'Australia/Broken_Hill', b'Australia/Broken_Hill'),
+                    (b'Australia/Currie', b'Australia/Currie'),
+                    (b'Australia/Darwin', b'Australia/Darwin'),
+                    (b'Australia/Eucla', b'Australia/Eucla'),
+                    (b'Australia/Hobart', b'Australia/Hobart'),
+                    (b'Australia/Lindeman', b'Australia/Lindeman'),
+                    (b'Australia/Lord_Howe', b'Australia/Lord_Howe'),
+                    (b'Australia/Melbourne', b'Australia/Melbourne'),
+                    (b'Australia/Perth', b'Australia/Perth'),
+                    (b'Australia/Sydney', b'Australia/Sydney'),
+                    (b'Canada/Atlantic', b'Canada/Atlantic'),
+                    (b'Canada/Central', b'Canada/Central'),
+                    (b'Canada/Eastern', b'Canada/Eastern'),
+                    (b'Canada/Mountain', b'Canada/Mountain'),
+                    (b'Canada/Newfoundland', b'Canada/Newfoundland'),
+                    (b'Canada/Pacific', b'Canada/Pacific'),
+                    (b'Europe/Amsterdam', b'Europe/Amsterdam'),
+                    (b'Europe/Andorra', b'Europe/Andorra'),
+                    (b'Europe/Astrakhan', b'Europe/Astrakhan'),
+                    (b'Europe/Athens', b'Europe/Athens'),
+                    (b'Europe/Belgrade', b'Europe/Belgrade'),
+                    (b'Europe/Berlin', b'Europe/Berlin'),
+                    (b'Europe/Bratislava', b'Europe/Bratislava'),
+                    (b'Europe/Brussels', b'Europe/Brussels'),
+                    (b'Europe/Bucharest', b'Europe/Bucharest'),
+                    (b'Europe/Budapest', b'Europe/Budapest'),
+                    (b'Europe/Busingen', b'Europe/Busingen'),
+                    (b'Europe/Chisinau', b'Europe/Chisinau'),
+                    (b'Europe/Copenhagen', b'Europe/Copenhagen'),
+                    (b'Europe/Dublin', b'Europe/Dublin'),
+                    (b'Europe/Gibraltar', b'Europe/Gibraltar'),
+                    (b'Europe/Guernsey', b'Europe/Guernsey'),
+                    (b'Europe/Helsinki', b'Europe/Helsinki'),
+                    (b'Europe/Isle_of_Man', b'Europe/Isle_of_Man'),
+                    (b'Europe/Istanbul', b'Europe/Istanbul'),
+                    (b'Europe/Jersey', b'Europe/Jersey'),
+                    (b'Europe/Kaliningrad', b'Europe/Kaliningrad'),
+                    (b'Europe/Kiev', b'Europe/Kiev'),
+                    (b'Europe/Kirov', b'Europe/Kirov'),
+                    (b'Europe/Lisbon', b'Europe/Lisbon'),
+                    (b'Europe/Ljubljana', b'Europe/Ljubljana'),
+                    (b'Europe/London', b'Europe/London'),
+                    (b'Europe/Luxembourg', b'Europe/Luxembourg'),
+                    (b'Europe/Madrid', b'Europe/Madrid'),
+                    (b'Europe/Malta', b'Europe/Malta'),
+                    (b'Europe/Mariehamn', b'Europe/Mariehamn'),
+                    (b'Europe/Minsk', b'Europe/Minsk'),
+                    (b'Europe/Monaco', b'Europe/Monaco'),
+                    (b'Europe/Moscow', b'Europe/Moscow'),
+                    (b'Europe/Oslo', b'Europe/Oslo'),
+                    (b'Europe/Paris', b'Europe/Paris'),
+                    (b'Europe/Podgorica', b'Europe/Podgorica'),
+                    (b'Europe/Prague', b'Europe/Prague'),
+                    (b'Europe/Riga', b'Europe/Riga'),
+                    (b'Europe/Rome', b'Europe/Rome'),
+                    (b'Europe/Samara', b'Europe/Samara'),
+                    (b'Europe/San_Marino', b'Europe/San_Marino'),
+                    (b'Europe/Sarajevo', b'Europe/Sarajevo'),
+                    (b'Europe/Saratov', b'Europe/Saratov'),
+                    (b'Europe/Simferopol', b'Europe/Simferopol'),
+                    (b'Europe/Skopje', b'Europe/Skopje'),
+                    (b'Europe/Sofia', b'Europe/Sofia'),
+                    (b'Europe/Stockholm', b'Europe/Stockholm'),
+                    (b'Europe/Tallinn', b'Europe/Tallinn'),
+                    (b'Europe/Tirane', b'Europe/Tirane'),
+                    (b'Europe/Ulyanovsk', b'Europe/Ulyanovsk'),
+                    (b'Europe/Uzhgorod', b'Europe/Uzhgorod'),
+                    (b'Europe/Vaduz', b'Europe/Vaduz'),
+                    (b'Europe/Vatican', b'Europe/Vatican'),
+                    (b'Europe/Vienna', b'Europe/Vienna'),
+                    (b'Europe/Vilnius', b'Europe/Vilnius'),
+                    (b'Europe/Volgograd', b'Europe/Volgograd'),
+                    (b'Europe/Warsaw', b'Europe/Warsaw'),
+                    (b'Europe/Zagreb', b'Europe/Zagreb'),
+                    (b'Europe/Zaporozhye', b'Europe/Zaporozhye'),
+                    (b'Europe/Zurich', b'Europe/Zurich'),
+                    (b'GMT', b'GMT'),
+                    (b'Indian/Antananarivo', b'Indian/Antananarivo'),
+                    (b'Indian/Chagos', b'Indian/Chagos'),
+                    (b'Indian/Christmas', b'Indian/Christmas'),
+                    (b'Indian/Cocos', b'Indian/Cocos'),
+                    (b'Indian/Comoro', b'Indian/Comoro'),
+                    (b'Indian/Kerguelen', b'Indian/Kerguelen'),
+                    (b'Indian/Mahe', b'Indian/Mahe'),
+                    (b'Indian/Maldives', b'Indian/Maldives'),
+                    (b'Indian/Mauritius', b'Indian/Mauritius'),
+                    (b'Indian/Mayotte', b'Indian/Mayotte'),
+                    (b'Indian/Reunion', b'Indian/Reunion'),
+                    (b'Pacific/Apia', b'Pacific/Apia'),
+                    (b'Pacific/Auckland', b'Pacific/Auckland'),
+                    (b'Pacific/Bougainville', b'Pacific/Bougainville'),
+                    (b'Pacific/Chatham', b'Pacific/Chatham'),
+                    (b'Pacific/Chuuk', b'Pacific/Chuuk'),
+                    (b'Pacific/Easter', b'Pacific/Easter'),
+                    (b'Pacific/Efate', b'Pacific/Efate'),
+                    (b'Pacific/Enderbury', b'Pacific/Enderbury'),
+                    (b'Pacific/Fakaofo', b'Pacific/Fakaofo'),
+                    (b'Pacific/Fiji', b'Pacific/Fiji'),
+                    (b'Pacific/Funafuti', b'Pacific/Funafuti'),
+                    (b'Pacific/Galapagos', b'Pacific/Galapagos'),
+                    (b'Pacific/Gambier', b'Pacific/Gambier'),
+                    (b'Pacific/Guadalcanal', b'Pacific/Guadalcanal'),
+                    (b'Pacific/Guam', b'Pacific/Guam'),
+                    (b'Pacific/Honolulu', b'Pacific/Honolulu'),
+                    (b'Pacific/Kiritimati', b'Pacific/Kiritimati'),
+                    (b'Pacific/Kosrae', b'Pacific/Kosrae'),
+                    (b'Pacific/Kwajalein', b'Pacific/Kwajalein'),
+                    (b'Pacific/Majuro', b'Pacific/Majuro'),
+                    (b'Pacific/Marquesas', b'Pacific/Marquesas'),
+                    (b'Pacific/Midway', b'Pacific/Midway'),
+                    (b'Pacific/Nauru', b'Pacific/Nauru'),
+                    (b'Pacific/Niue', b'Pacific/Niue'),
+                    (b'Pacific/Norfolk', b'Pacific/Norfolk'),
+                    (b'Pacific/Noumea', b'Pacific/Noumea'),
+                    (b'Pacific/Pago_Pago', b'Pacific/Pago_Pago'),
+                    (b'Pacific/Palau', b'Pacific/Palau'),
+                    (b'Pacific/Pitcairn', b'Pacific/Pitcairn'),
+                    (b'Pacific/Pohnpei', b'Pacific/Pohnpei'),
+                    (b'Pacific/Port_Moresby', b'Pacific/Port_Moresby'),
+                    (b'Pacific/Rarotonga', b'Pacific/Rarotonga'),
+                    (b'Pacific/Saipan', b'Pacific/Saipan'),
+                    (b'Pacific/Tahiti', b'Pacific/Tahiti'),
+                    (b'Pacific/Tarawa', b'Pacific/Tarawa'),
+                    (b'Pacific/Tongatapu', b'Pacific/Tongatapu'),
+                    (b'Pacific/Wake', b'Pacific/Wake'),
+                    (b'Pacific/Wallis', b'Pacific/Wallis'),
+                    (b'US/Alaska', b'US/Alaska'),
+                    (b'US/Arizona', b'US/Arizona'),
+                    (b'US/Central', b'US/Central'),
+                    (b'US/Eastern', b'US/Eastern'),
+                    (b'US/Hawaii', b'US/Hawaii'),
+                    (b'US/Mountain', b'US/Mountain'),
+                    (b'US/Pacific', b'US/Pacific'),
+                    (b'UTC', b'UTC')
+                ], max_length=48, verbose_name='Timezone'
+            ),
         ),
     ]
diff --git a/mayan/apps/common/migrations/0010_auto_20180403_0702.py b/mayan/apps/common/migrations/0010_auto_20180403_0702.py
index 3cf2931c30..d57841c9f9 100644
--- a/mayan/apps/common/migrations/0010_auto_20180403_0702.py
+++ b/mayan/apps/common/migrations/0010_auto_20180403_0702.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-03 07:02
 from __future__ import unicode_literals
 
 import mayan.apps.common.models
@@ -17,6 +15,11 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='shareduploadedfile',
             name='file',
-            field=models.FileField(storage=django.core.files.storage.FileSystemStorage(location=b'mayan/media/shared_files'), upload_to=mayan.apps.common.models.upload_to, verbose_name='File'),
+            field=models.FileField(
+                storage=django.core.files.storage.FileSystemStorage(
+                    location=b'mayan/media/shared_files'
+                ), upload_to=mayan.apps.common.models.upload_to,
+                verbose_name='File'
+            ),
         ),
     ]
diff --git a/mayan/apps/common/migrations/0011_auto_20180429_0758.py b/mayan/apps/common/migrations/0011_auto_20180429_0758.py
index be68c11841..0a8cc75b94 100644
--- a/mayan/apps/common/migrations/0011_auto_20180429_0758.py
+++ b/mayan/apps/common/migrations/0011_auto_20180429_0758.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-29 07:58
 from __future__ import unicode_literals
 
 import mayan.apps.common.models
@@ -17,6 +15,11 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='shareduploadedfile',
             name='file',
-            field=models.FileField(storage=django.core.files.storage.FileSystemStorage(location=b'/home/rosarior/development/mayan-edms/mayan/media/shared_files'), upload_to=mayan.apps.common.models.upload_to, verbose_name='File'),
+            field=models.FileField(
+                storage=django.core.files.storage.FileSystemStorage(
+                    location=b'/home/rosarior/development/mayan-edms/mayan/media/shared_files'
+                ), upload_to=mayan.apps.common.models.upload_to,
+                verbose_name='File'
+            ),
         ),
     ]
diff --git a/mayan/apps/converter/migrations/0001_initial.py b/mayan/apps/converter/migrations/0001_initial.py
index 0e67a82690..65ab67db6b 100644
--- a/mayan/apps/converter/migrations/0001_initial.py
+++ b/mayan/apps/converter/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
@@ -41,7 +40,9 @@ class Migration(migrations.Migration):
                 (
                     'arguments', models.TextField(
                         blank=True, null=True, verbose_name='Arguments',
-                        validators=[mayan.apps.converter.validators.YAMLValidator]
+                        validators=[
+                            mayan.apps.converter.validators.YAMLValidator
+                        ]
                     )
                 ),
                 (
diff --git a/mayan/apps/converter/migrations/0002_auto_20150608_1943.py b/mayan/apps/converter/migrations/0002_auto_20150608_1943.py
index a10af53919..e639b6ad7e 100644
--- a/mayan/apps/converter/migrations/0002_auto_20150608_1943.py
+++ b/mayan/apps/converter/migrations/0002_auto_20150608_1943.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/converter/migrations/0003_auto_20150704_0731.py b/mayan/apps/converter/migrations/0003_auto_20150704_0731.py
index bac515dc5d..446b1987ca 100644
--- a/mayan/apps/converter/migrations/0003_auto_20150704_0731.py
+++ b/mayan/apps/converter/migrations/0003_auto_20150704_0731.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0004_auto_20150704_0753.py b/mayan/apps/converter/migrations/0004_auto_20150704_0753.py
index d3e5ef1927..82a01b2814 100644
--- a/mayan/apps/converter/migrations/0004_auto_20150704_0753.py
+++ b/mayan/apps/converter/migrations/0004_auto_20150704_0753.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0005_auto_20150708_0118.py b/mayan/apps/converter/migrations/0005_auto_20150708_0118.py
index afef03835b..d415d513bb 100644
--- a/mayan/apps/converter/migrations/0005_auto_20150708_0118.py
+++ b/mayan/apps/converter/migrations/0005_auto_20150708_0118.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0006_auto_20150708_0120.py b/mayan/apps/converter/migrations/0006_auto_20150708_0120.py
index 9620b8e0f2..6c0c5af9cc 100644
--- a/mayan/apps/converter/migrations/0006_auto_20150708_0120.py
+++ b/mayan/apps/converter/migrations/0006_auto_20150708_0120.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0007_auto_20150711_0656.py b/mayan/apps/converter/migrations/0007_auto_20150711_0656.py
index 540661ad9e..e780a3e9fd 100644
--- a/mayan/apps/converter/migrations/0007_auto_20150711_0656.py
+++ b/mayan/apps/converter/migrations/0007_auto_20150711_0656.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0008_auto_20150711_0723.py b/mayan/apps/converter/migrations/0008_auto_20150711_0723.py
index db89a5fff0..379cf7a4be 100644
--- a/mayan/apps/converter/migrations/0008_auto_20150711_0723.py
+++ b/mayan/apps/converter/migrations/0008_auto_20150711_0723.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0009_auto_20150714_2228.py b/mayan/apps/converter/migrations/0009_auto_20150714_2228.py
index 2ad907364c..0210720970 100644
--- a/mayan/apps/converter/migrations/0009_auto_20150714_2228.py
+++ b/mayan/apps/converter/migrations/0009_auto_20150714_2228.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0010_auto_20150815_0351.py b/mayan/apps/converter/migrations/0010_auto_20150815_0351.py
index f5f745ae7a..91f2be90d8 100644
--- a/mayan/apps/converter/migrations/0010_auto_20150815_0351.py
+++ b/mayan/apps/converter/migrations/0010_auto_20150815_0351.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/converter/migrations/0011_auto_20170118_1758.py b/mayan/apps/converter/migrations/0011_auto_20170118_1758.py
index 75ba3d99fb..f57676951d 100644
--- a/mayan/apps/converter/migrations/0011_auto_20170118_1758.py
+++ b/mayan/apps/converter/migrations/0011_auto_20170118_1758.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-01-18 17:58
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,21 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='transformation',
             name='name',
-            field=models.CharField(choices=[('crop', 'Crop: left, top, right, bottom'), ('flip', 'Flip'), ('gaussianblur', 'Gaussian blur: radius'), ('mirror', 'Mirror'), ('resize', 'Resize: width, height'), ('rotate', 'Rotate: degrees'), ('rotate180', 'Rotate 180 degrees'), ('rotate270', 'Rotate 270 degrees'), ('rotate90', 'Rotate 90 degrees'), ('unsharpmask', 'Unsharp masking: radius, percent, threshold'), ('zoom', 'Zoom: percent')], max_length=128, verbose_name='Name'),
+            field=models.CharField(
+                choices=[
+                    ('crop', 'Crop: left, top, right, bottom'),
+                    ('flip', 'Flip'),
+                    ('gaussianblur', 'Gaussian blur: radius'),
+                    ('mirror', 'Mirror'), ('resize', 'Resize: width, height'),
+                    ('rotate', 'Rotate: degrees'),
+                    ('rotate180', 'Rotate 180 degrees'),
+                    ('rotate270', 'Rotate 270 degrees'),
+                    ('rotate90', 'Rotate 90 degrees'),
+                    (
+                        'unsharpmask',
+                        'Unsharp masking: radius, percent, threshold'
+                    ), ('zoom', 'Zoom: percent')
+                ], max_length=128, verbose_name='Name'
+            ),
         ),
     ]
diff --git a/mayan/apps/converter/migrations/0012_auto_20170714_2133.py b/mayan/apps/converter/migrations/0012_auto_20170714_2133.py
index 5d3c65bdca..955b42e739 100644
--- a/mayan/apps/converter/migrations/0012_auto_20170714_2133.py
+++ b/mayan/apps/converter/migrations/0012_auto_20170714_2133.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-14 21:33
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,22 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='transformation',
             name='name',
-            field=models.CharField(choices=[('crop', 'Crop: left, top, right, bottom'), ('flip', 'Flip'), ('gaussianblur', 'Gaussian blur: radius'), ('lineart', 'Line art'), ('mirror', 'Mirror'), ('resize', 'Resize: width, height'), ('rotate', 'Rotate: degrees'), ('rotate180', 'Rotate 180 degrees'), ('rotate270', 'Rotate 270 degrees'), ('rotate90', 'Rotate 90 degrees'), ('unsharpmask', 'Unsharp masking: radius, percent, threshold'), ('zoom', 'Zoom: percent')], max_length=128, verbose_name='Name'),
+            field=models.CharField(
+                choices=[
+                    ('crop', 'Crop: left, top, right, bottom'),
+                    ('flip', 'Flip'),
+                    ('gaussianblur', 'Gaussian blur: radius'),
+                    ('lineart', 'Line art'), ('mirror', 'Mirror'),
+                    ('resize', 'Resize: width, height'),
+                    ('rotate', 'Rotate: degrees'),
+                    ('rotate180', 'Rotate 180 degrees'),
+                    ('rotate270', 'Rotate 270 degrees'),
+                    ('rotate90', 'Rotate 90 degrees'),
+                    (
+                        'unsharpmask',
+                        'Unsharp masking: radius, percent, threshold'
+                    ), ('zoom', 'Zoom: percent')
+                ], max_length=128, verbose_name='Name'
+            ),
         ),
     ]
diff --git a/mayan/apps/converter/migrations/0013_auto_20180823_2353.py b/mayan/apps/converter/migrations/0013_auto_20180823_2353.py
index 440c1395b8..c390cdf0c4 100644
--- a/mayan/apps/converter/migrations/0013_auto_20180823_2353.py
+++ b/mayan/apps/converter/migrations/0013_auto_20180823_2353.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-23 23:53
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,22 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='transformation',
             name='name',
-            field=models.CharField(choices=[('crop', 'Crop: left, top, right, bottom'), ('flip', 'Flip'), ('gaussianblur', 'Gaussian blur: radius'), ('lineart', 'Line art'), ('mirror', 'Mirror'), ('resize', 'Resize: width, height'), ('rotate', 'Rotate: degrees, fillcolor'), ('rotate180', 'Rotate 180 degrees'), ('rotate270', 'Rotate 270 degrees'), ('rotate90', 'Rotate 90 degrees'), ('unsharpmask', 'Unsharp masking: radius, percent, threshold'), ('zoom', 'Zoom: percent')], max_length=128, verbose_name='Name'),
+            field=models.CharField(
+                choices=[
+                    ('crop', 'Crop: left, top, right, bottom'),
+                    ('flip', 'Flip'),
+                    ('gaussianblur', 'Gaussian blur: radius'),
+                    ('lineart', 'Line art'), ('mirror', 'Mirror'),
+                    ('resize', 'Resize: width, height'),
+                    ('rotate', 'Rotate: degrees, fillcolor'),
+                    ('rotate180', 'Rotate 180 degrees'),
+                    ('rotate270', 'Rotate 270 degrees'),
+                    ('rotate90', 'Rotate 90 degrees'),
+                    (
+                        'unsharpmask',
+                        'Unsharp masking: radius, percent, threshold'
+                    ), ('zoom', 'Zoom: percent')
+                ], max_length=128, verbose_name='Name'
+            ),
         ),
     ]
diff --git a/mayan/apps/dependencies/classes.py b/mayan/apps/dependencies/classes.py
index a8874f19a7..6ac05db53f 100644
--- a/mayan/apps/dependencies/classes.py
+++ b/mayan/apps/dependencies/classes.py
@@ -173,7 +173,8 @@ class Dependency(object):
 
         for dependency in cls.get_all():
             print('* ', end='')
-            print(template.format(
+            print(
+                template.format(
                     dependency.name,
                     force_text(dependency.class_name_verbose_name),
                     force_text(dependency.get_version_string()),
diff --git a/mayan/apps/dependencies/management/commands/generaterequirements.py b/mayan/apps/dependencies/management/commands/generaterequirements.py
index 5cf24603a4..c9fdab41c3 100644
--- a/mayan/apps/dependencies/management/commands/generaterequirements.py
+++ b/mayan/apps/dependencies/management/commands/generaterequirements.py
@@ -3,7 +3,7 @@ from __future__ import unicode_literals
 from django.core import management
 from django.utils.translation import ugettext_lazy as _
 
-from ...classes import PythonDependency, DependencyGroup
+from ...classes import PythonDependency
 
 
 class Command(management.BaseCommand):
diff --git a/mayan/apps/django_gpg/migrations/0001_initial.py b/mayan/apps/django_gpg/migrations/0001_initial.py
index 68e0aa0e31..2c2c354edf 100644
--- a/mayan/apps/django_gpg/migrations/0001_initial.py
+++ b/mayan/apps/django_gpg/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/django_gpg/migrations/0002_auto_20160322_1756.py b/mayan/apps/django_gpg/migrations/0002_auto_20160322_1756.py
index fd085a20d6..b16cc6b24e 100644
--- a/mayan/apps/django_gpg/migrations/0002_auto_20160322_1756.py
+++ b/mayan/apps/django_gpg/migrations/0002_auto_20160322_1756.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/django_gpg/migrations/0003_auto_20160322_1810.py b/mayan/apps/django_gpg/migrations/0003_auto_20160322_1810.py
index c7a62e5450..9593536d4a 100644
--- a/mayan/apps/django_gpg/migrations/0003_auto_20160322_1810.py
+++ b/mayan/apps/django_gpg/migrations/0003_auto_20160322_1810.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/django_gpg/migrations/0004_auto_20160322_2202.py b/mayan/apps/django_gpg/migrations/0004_auto_20160322_2202.py
index d4d24ecc20..2e709b6d8e 100644
--- a/mayan/apps/django_gpg/migrations/0004_auto_20160322_2202.py
+++ b/mayan/apps/django_gpg/migrations/0004_auto_20160322_2202.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/django_gpg/migrations/0005_remove_key_key_id.py b/mayan/apps/django_gpg/migrations/0005_remove_key_key_id.py
index 7f6b0718aa..0f9aee489d 100644
--- a/mayan/apps/django_gpg/migrations/0005_remove_key_key_id.py
+++ b/mayan/apps/django_gpg/migrations/0005_remove_key_key_id.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/django_gpg/migrations/0006_auto_20160510_0025.py b/mayan/apps/django_gpg/migrations/0006_auto_20160510_0025.py
index be851a2296..d5598d1362 100644
--- a/mayan/apps/django_gpg/migrations/0006_auto_20160510_0025.py
+++ b/mayan/apps/django_gpg/migrations/0006_auto_20160510_0025.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/document_comments/migrations/0001_initial.py b/mayan/apps/document_comments/migrations/0001_initial.py
index cd9fd3f8c4..ca4f36c715 100644
--- a/mayan/apps/document_comments/migrations/0001_initial.py
+++ b/mayan/apps/document_comments/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_comments/migrations/0002_auto_20150729_2144.py b/mayan/apps/document_comments/migrations/0002_auto_20150729_2144.py
index b1f527a5ca..b8bc021b7a 100644
--- a/mayan/apps/document_comments/migrations/0002_auto_20150729_2144.py
+++ b/mayan/apps/document_comments/migrations/0002_auto_20150729_2144.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_comments/migrations/0003_auto_20150729_2144.py b/mayan/apps/document_comments/migrations/0003_auto_20150729_2144.py
index ca3fe1f48c..82a7347f04 100644
--- a/mayan/apps/document_comments/migrations/0003_auto_20150729_2144.py
+++ b/mayan/apps/document_comments/migrations/0003_auto_20150729_2144.py
@@ -1,11 +1,10 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
 from django.conf import settings
 
 
-def migrate_old_comments(apps, schema_editor):
+def operation_migrate_old_comments(apps, schema_editor):
     # https://code.djangoproject.com/ticket/24282
     # If someone has a better solution until Django 1.8, would appreciate
     # a pull-request :)
@@ -17,13 +16,19 @@ def migrate_old_comments(apps, schema_editor):
         pass
     else:
 
-        Comment = apps.get_model('document_comments', 'Comment')
-        Document = apps.get_model('documents', 'Document')
+        Comment = apps.get_model(
+            app_label='document_comments', model_name='Comment'
+        )
+        Document = apps.get_model(
+            app_label='documents', model_name='Document'
+        )
         User = apps.get_model(*settings.AUTH_USER_MODEL.split('.'))
 
         for old_comment in OldComment.objects.using(schema_editor.connection.alias).all():
             comment = Comment(
-                document=Document.objects.using(schema_editor.connection.alias).get(pk=old_comment.object_pk),
+                document=Document.objects.using(
+                    schema_editor.connection.alias
+                ).get(pk=old_comment.object_pk),
                 user=User(old_comment.user.pk),
                 comment=old_comment.comment,
                 submit_date=old_comment.submit_date,
@@ -42,5 +47,5 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(migrate_old_comments),
+        migrations.RunPython(code=operation_migrate_old_comments),
     ]
diff --git a/mayan/apps/document_comments/migrations/0004_auto_20150920_0202.py b/mayan/apps/document_comments/migrations/0004_auto_20150920_0202.py
index 25a5623a4a..92ae522b0d 100644
--- a/mayan/apps/document_comments/migrations/0004_auto_20150920_0202.py
+++ b/mayan/apps/document_comments/migrations/0004_auto_20150920_0202.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_indexing/migrations/0001_initial.py b/mayan/apps/document_indexing/migrations/0001_initial.py
index 27ab29b632..921dfb144a 100644
--- a/mayan/apps/document_indexing/migrations/0001_initial.py
+++ b/mayan/apps/document_indexing/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_indexing/migrations/0002_remove_index_name.py b/mayan/apps/document_indexing/migrations/0002_remove_index_name.py
index 41ad3eb87e..8c629345a0 100644
--- a/mayan/apps/document_indexing/migrations/0002_remove_index_name.py
+++ b/mayan/apps/document_indexing/migrations/0002_remove_index_name.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/document_indexing/migrations/0003_auto_20150708_0101.py b/mayan/apps/document_indexing/migrations/0003_auto_20150708_0101.py
index def52f6856..8f0119a87f 100644
--- a/mayan/apps/document_indexing/migrations/0003_auto_20150708_0101.py
+++ b/mayan/apps/document_indexing/migrations/0003_auto_20150708_0101.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/document_indexing/migrations/0004_auto_20150708_0113.py b/mayan/apps/document_indexing/migrations/0004_auto_20150708_0113.py
index 8ca92d4236..76dec15b3b 100644
--- a/mayan/apps/document_indexing/migrations/0004_auto_20150708_0113.py
+++ b/mayan/apps/document_indexing/migrations/0004_auto_20150708_0113.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_indexing/migrations/0005_index_slug.py b/mayan/apps/document_indexing/migrations/0005_index_slug.py
index deb077c8ab..57f21e9dcd 100644
--- a/mayan/apps/document_indexing/migrations/0005_index_slug.py
+++ b/mayan/apps/document_indexing/migrations/0005_index_slug.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_indexing/migrations/0006_auto_20150729_0144.py b/mayan/apps/document_indexing/migrations/0006_auto_20150729_0144.py
index 4038af28d3..5585a11ac0 100644
--- a/mayan/apps/document_indexing/migrations/0006_auto_20150729_0144.py
+++ b/mayan/apps/document_indexing/migrations/0006_auto_20150729_0144.py
@@ -1,12 +1,11 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
 from django.template.defaultfilters import slugify
 
 
-def assign_slugs(apps, schema_editor):
-    Index = apps.get_model('document_indexing', 'Index')
+def operation_assign_slugs(apps, schema_editor):
+    Index = apps.get_model(app_label='document_indexing', model_name='Index')
 
     for index in Index.objects.using(schema_editor.connection.alias).all():
         index.slug = slugify(index.label)
@@ -20,5 +19,5 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(assign_slugs),
+        migrations.RunPython(code=operation_assign_slugs),
     ]
diff --git a/mayan/apps/document_indexing/migrations/0007_auto_20150729_0152.py b/mayan/apps/document_indexing/migrations/0007_auto_20150729_0152.py
index 160f80a8df..cef594ed2f 100644
--- a/mayan/apps/document_indexing/migrations/0007_auto_20150729_0152.py
+++ b/mayan/apps/document_indexing/migrations/0007_auto_20150729_0152.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_indexing/migrations/0008_auto_20150729_1515.py b/mayan/apps/document_indexing/migrations/0008_auto_20150729_1515.py
index 9ed5454422..d9d53e6a79 100644
--- a/mayan/apps/document_indexing/migrations/0008_auto_20150729_1515.py
+++ b/mayan/apps/document_indexing/migrations/0008_auto_20150729_1515.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_indexing/migrations/0009_auto_20150815_0351.py b/mayan/apps/document_indexing/migrations/0009_auto_20150815_0351.py
index 902e6b20b8..7cbd8d551c 100644
--- a/mayan/apps/document_indexing/migrations/0009_auto_20150815_0351.py
+++ b/mayan/apps/document_indexing/migrations/0009_auto_20150815_0351.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_indexing/migrations/0010_documentindexinstancenode_indexinstance.py b/mayan/apps/document_indexing/migrations/0010_documentindexinstancenode_indexinstance.py
index e9368591fb..02a370cf45 100644
--- a/mayan/apps/document_indexing/migrations/0010_documentindexinstancenode_indexinstance.py
+++ b/mayan/apps/document_indexing/migrations/0010_documentindexinstancenode_indexinstance.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/document_indexing/migrations/0011_auto_20170524_0456.py b/mayan/apps/document_indexing/migrations/0011_auto_20170524_0456.py
index 192fa3dd8e..44f51fe695 100644
--- a/mayan/apps/document_indexing/migrations/0011_auto_20170524_0456.py
+++ b/mayan/apps/document_indexing/migrations/0011_auto_20170524_0456.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.6 on 2017-05-24 04:56
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/document_indexing/migrations/0012_auto_20170530_0728.py b/mayan/apps/document_indexing/migrations/0012_auto_20170530_0728.py
index e07de36b16..74984ec1f6 100644
--- a/mayan/apps/document_indexing/migrations/0012_auto_20170530_0728.py
+++ b/mayan/apps/document_indexing/migrations/0012_auto_20170530_0728.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-05-30 07:28
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -16,16 +14,27 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='index',
             name='slug',
-            field=models.SlugField(help_text='This value will be used by other apps to reference this index.', max_length=128, unique=True, verbose_name='Slug'),
+            field=models.SlugField(
+                help_text='This value will be used by other apps to reference '
+                'this index.', max_length=128, unique=True, verbose_name='Slug'
+            ),
         ),
         migrations.AlterField(
             model_name='indexinstancenode',
             name='documents',
-            field=models.ManyToManyField(related_name='index_instance_nodes', to='documents.Document', verbose_name='Documents'),
+            field=models.ManyToManyField(
+                related_name='index_instance_nodes', to='documents.Document',
+                verbose_name='Documents'
+            ),
         ),
         migrations.AlterField(
             model_name='indexinstancenode',
             name='index_template_node',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='index_instance_nodes', to='document_indexing.IndexTemplateNode', verbose_name='Index template node'),
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name='index_instance_nodes',
+                to='document_indexing.IndexTemplateNode',
+                verbose_name='Index template node'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_indexing/migrations/0013_auto_20170714_2133.py b/mayan/apps/document_indexing/migrations/0013_auto_20170714_2133.py
index 6ccaeb6689..936df28176 100644
--- a/mayan/apps/document_indexing/migrations/0013_auto_20170714_2133.py
+++ b/mayan/apps/document_indexing/migrations/0013_auto_20170714_2133.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-14 21:33
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,9 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='index',
-            options={'ordering': ('label',), 'verbose_name': 'Index', 'verbose_name_plural': 'Indexes'},
+            options={
+                'ordering': ('label',), 'verbose_name': 'Index',
+                'verbose_name_plural': 'Indexes'
+            },
         ),
     ]
diff --git a/mayan/apps/document_indexing/migrations/0014_auto_20180823_2353.py b/mayan/apps/document_indexing/migrations/0014_auto_20180823_2353.py
index b83a6e9aa9..b0885b591f 100644
--- a/mayan/apps/document_indexing/migrations/0014_auto_20180823_2353.py
+++ b/mayan/apps/document_indexing/migrations/0014_auto_20180823_2353.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-23 23:53
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,11 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='indextemplatenode',
             name='expression',
-            field=models.TextField(help_text="Enter a template to render. Use Django's default templating language (https://docs.djangoproject.com/en/1.11/ref/templates/builtins/)", verbose_name='Indexing expression'),
+            field=models.TextField(
+                help_text="Enter a template to render. Use Django's default "
+                "templating language "
+                "(https://docs.djangoproject.com/en/1.11/ref/templates/builtins/)",
+                verbose_name='Indexing expression'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_indexing/migrations/0015_auto_20190429_1922.py b/mayan/apps/document_indexing/migrations/0015_auto_20190429_1922.py
index 48e1f59a9e..bf38b025e3 100644
--- a/mayan/apps/document_indexing/migrations/0015_auto_20190429_1922.py
+++ b/mayan/apps/document_indexing/migrations/0015_auto_20190429_1922.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.20 on 2019-04-29 19:22
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='index',
             name='document_types',
-            field=models.ManyToManyField(related_name='indexes', to='documents.DocumentType', verbose_name='Document types'),
+            field=models.ManyToManyField(
+                related_name='indexes', to='documents.DocumentType',
+                verbose_name='Document types'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_parsing/migrations/0001_initial.py b/mayan/apps/document_parsing/migrations/0001_initial.py
index 98c6b861ed..859dc283f8 100644
--- a/mayan/apps/document_parsing/migrations/0001_initial.py
+++ b/mayan/apps/document_parsing/migrations/0001_initial.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-23 18:55
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/document_parsing/migrations/0002_auto_20170827_1617.py b/mayan/apps/document_parsing/migrations/0002_auto_20170827_1617.py
index 8776082d69..7ce48544e1 100644
--- a/mayan/apps/document_parsing/migrations/0002_auto_20170827_1617.py
+++ b/mayan/apps/document_parsing/migrations/0002_auto_20170827_1617.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-27 16:17
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/document_parsing/migrations/0003_documenttypesettings.py b/mayan/apps/document_parsing/migrations/0003_documenttypesettings.py
index 388e867545..466a65dc54 100644
--- a/mayan/apps/document_parsing/migrations/0003_documenttypesettings.py
+++ b/mayan/apps/document_parsing/migrations/0003_documenttypesettings.py
@@ -1,29 +1,39 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-10 06:39
 from __future__ import unicode_literals
 
 from django.db import migrations, models
 import django.db.models.deletion
 
 
-def create_parsing_setting_for_existing_document_types(apps, schema_editor):
-    DocumentType = apps.get_model('documents', 'DocumentType')
-    DocumentTypeSettings = apps.get_model('document_parsing', 'DocumentTypeSettings')
+def operation_create_parsing_setting_for_existing_document_types(apps, schema_editor):
+    DocumentType = apps.get_model(
+        app_label='documents', model_name='DocumentType'
+    )
+    DocumentTypeSettings = apps.get_model(
+        app_label='document_parsing', model_name='DocumentTypeSettings'
+    )
 
     for document_type in DocumentType.objects.using(schema_editor.connection.alias).all():
         try:
-            DocumentTypeSettings.objects.using(schema_editor.connection.alias).create(document_type=document_type)
+            DocumentTypeSettings.objects.using(
+                schema_editor.connection.alias
+            ).create(document_type=document_type)
         except DocumentTypeSettings.DoesNotExist:
             pass
 
 
-def delete_parsing_setting_for_existing_document_types(apps, schema_editor):
-    DocumentType = apps.get_model('documents', 'DocumentType')
-    DocumentTypeSettings = apps.get_model('document_parsing', 'DocumentTypeSettings')
+def operation_delete_parsing_setting_for_existing_document_types(apps, schema_editor):
+    DocumentType = apps.get_model(
+        app_label='documents', model_name='DocumentType'
+    )
+    DocumentTypeSettings = apps.get_model(
+        app_label='document_parsing', model_name='DocumentTypeSettings'
+    )
 
     for document_type in DocumentType.objects.using(schema_editor.connection.alias).all():
         try:
-            DocumentTypeSettings.objects.using(schema_editor.connection.alias).get(document_type=document_type).delete()
+            DocumentTypeSettings.objects.using(
+                schema_editor.connection.alias
+            ).get(document_type=document_type).delete()
         except DocumentTypeSettings.DoesNotExist:
             pass
 
@@ -39,9 +49,26 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='DocumentTypeSettings',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('auto_parsing', models.BooleanField(default=True, verbose_name='Automatically queue newly created documents for parsing.')),
-                ('document_type', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='parsing_settings', to='documents.DocumentType', verbose_name='Document type')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'auto_parsing', models.BooleanField(
+                        default=True, verbose_name='Automatically queue '
+                        'newly created documents for parsing.'
+                    )
+                ),
+                (
+                    'document_type', models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='parsing_settings',
+                        to='documents.DocumentType',
+                        verbose_name='Document type'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Document type settings',
@@ -49,7 +76,7 @@ class Migration(migrations.Migration):
             },
         ),
         migrations.RunPython(
-            code=create_parsing_setting_for_existing_document_types,
-            reverse_code=delete_parsing_setting_for_existing_document_types,
+            code=operation_create_parsing_setting_for_existing_document_types,
+            reverse_code=operation_delete_parsing_setting_for_existing_document_types,
         )
     ]
diff --git a/mayan/apps/document_parsing/migrations/0004_auto_20180917_0645.py b/mayan/apps/document_parsing/migrations/0004_auto_20180917_0645.py
index 5d8f7f5ab7..eda5b59ffa 100644
--- a/mayan/apps/document_parsing/migrations/0004_auto_20180917_0645.py
+++ b/mayan/apps/document_parsing/migrations/0004_auto_20180917_0645.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 06:45
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentpagecontent',
             name='content',
-            field=models.TextField(blank=True, help_text='The actual text content as extracted by the document parsing backend.', verbose_name='Content'),
+            field=models.TextField(
+                blank=True, help_text='The actual text content as extracted '
+                'by the document parsing backend.', verbose_name='Content'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_signatures/migrations/0001_initial.py b/mayan/apps/document_signatures/migrations/0001_initial.py
index 9b78380944..727a9ad891 100644
--- a/mayan/apps/document_signatures/migrations/0001_initial.py
+++ b/mayan/apps/document_signatures/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_signatures/migrations/0002_auto_20150608_1902.py b/mayan/apps/document_signatures/migrations/0002_auto_20150608_1902.py
index 4fd69b1b45..b64720585e 100644
--- a/mayan/apps/document_signatures/migrations/0002_auto_20150608_1902.py
+++ b/mayan/apps/document_signatures/migrations/0002_auto_20150608_1902.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
@@ -27,7 +26,8 @@ class Migration(migrations.Migration):
             name='signature_file',
             field=models.FileField(
                 storage=FileSystemStorage(),
-                upload_to=mayan.apps.document_signatures.models.upload_to, null=True,
+                upload_to=mayan.apps.document_signatures.models.upload_to,
+                null=True,
                 verbose_name='Signature file', blank=True
             ),
             preserve_default=True,
diff --git a/mayan/apps/document_signatures/migrations/0003_auto_20160325_0052.py b/mayan/apps/document_signatures/migrations/0003_auto_20160325_0052.py
index 737276a07c..6de05386b8 100644
--- a/mayan/apps/document_signatures/migrations/0003_auto_20160325_0052.py
+++ b/mayan/apps/document_signatures/migrations/0003_auto_20160325_0052.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/document_signatures/migrations/0004_auto_20160325_0418.py b/mayan/apps/document_signatures/migrations/0004_auto_20160325_0418.py
index 8cbbd1c419..e0350ad5f1 100644
--- a/mayan/apps/document_signatures/migrations/0004_auto_20160325_0418.py
+++ b/mayan/apps/document_signatures/migrations/0004_auto_20160325_0418.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/document_signatures/migrations/0005_auto_20160325_0748.py b/mayan/apps/document_signatures/migrations/0005_auto_20160325_0748.py
index 76bbc3bee3..49dc88f222 100644
--- a/mayan/apps/document_signatures/migrations/0005_auto_20160325_0748.py
+++ b/mayan/apps/document_signatures/migrations/0005_auto_20160325_0748.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/document_signatures/migrations/0006_auto_20160326_0616.py b/mayan/apps/document_signatures/migrations/0006_auto_20160326_0616.py
index adb06aeea3..33da047f4f 100644
--- a/mayan/apps/document_signatures/migrations/0006_auto_20160326_0616.py
+++ b/mayan/apps/document_signatures/migrations/0006_auto_20160326_0616.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/document_signatures/migrations/0007_auto_20180403_0702.py b/mayan/apps/document_signatures/migrations/0007_auto_20180403_0702.py
index f822e966bd..95072e9794 100644
--- a/mayan/apps/document_signatures/migrations/0007_auto_20180403_0702.py
+++ b/mayan/apps/document_signatures/migrations/0007_auto_20180403_0702.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-03 07:02
 from __future__ import unicode_literals
 
 import django.core.files.storage
@@ -18,6 +16,12 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='detachedsignature',
             name='signature_file',
-            field=models.FileField(blank=True, null=True, storage=django.core.files.storage.FileSystemStorage(location=b'mayan/media/document_storage'), upload_to=mayan.apps.document_signatures.models.upload_to, verbose_name='Signature file'),
+            field=models.FileField(
+                blank=True, null=True,
+                storage=django.core.files.storage.FileSystemStorage(
+                    location=b'mayan/media/document_storage'
+                ), upload_to=mayan.apps.document_signatures.models.upload_to,
+                verbose_name='Signature file'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_signatures/migrations/0008_auto_20180429_0759.py b/mayan/apps/document_signatures/migrations/0008_auto_20180429_0759.py
index ff48b34be2..55d29fdc6c 100644
--- a/mayan/apps/document_signatures/migrations/0008_auto_20180429_0759.py
+++ b/mayan/apps/document_signatures/migrations/0008_auto_20180429_0759.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-29 07:59
 from __future__ import unicode_literals
 
 import django.core.files.storage
@@ -19,10 +17,12 @@ class Migration(migrations.Migration):
             model_name='detachedsignature',
             name='signature_file',
             field=models.FileField(
-                blank=True, null=True, storage=django.core.files.storage.FileSystemStorage(
+                blank=True, null=True,
+                storage=django.core.files.storage.FileSystemStorage(
                     location=b'/home/rosarior/development/mayan-edms/mayan/media/document_signatures'
                 ),
-                upload_to=mayan.apps.document_signatures.models.upload_to, verbose_name='Signature file'
+                upload_to=mayan.apps.document_signatures.models.upload_to,
+                verbose_name='Signature file'
             ),
         ),
     ]
diff --git a/mayan/apps/document_states/migrations/0001_initial.py b/mayan/apps/document_states/migrations/0001_initial.py
index 2a8018ba1f..638056a72f 100644
--- a/mayan/apps/document_states/migrations/0001_initial.py
+++ b/mayan/apps/document_states/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_states/migrations/0002_workflowstate_completion.py b/mayan/apps/document_states/migrations/0002_workflowstate_completion.py
index 5c91b9d340..dcd23b1144 100644
--- a/mayan/apps/document_states/migrations/0002_workflowstate_completion.py
+++ b/mayan/apps/document_states/migrations/0002_workflowstate_completion.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/document_states/migrations/0003_auto_20170325_0447.py b/mayan/apps/document_states/migrations/0003_auto_20170325_0447.py
index 5dcaa0bee0..3722b10412 100644
--- a/mayan/apps/document_states/migrations/0003_auto_20170325_0447.py
+++ b/mayan/apps/document_states/migrations/0003_auto_20170325_0447.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-03-25 04:47
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/document_states/migrations/0004_workflow_internal_name.py b/mayan/apps/document_states/migrations/0004_workflow_internal_name.py
index 3750439352..cc6a25a2b5 100644
--- a/mayan/apps/document_states/migrations/0004_workflow_internal_name.py
+++ b/mayan/apps/document_states/migrations/0004_workflow_internal_name.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-06-03 18:26
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -8,8 +6,10 @@ from django.utils.text import slugify
 from mayan.apps.common.validators import validate_internal_name
 
 
-def generate_internal_name(apps, schema_editor):
-    Workflow = apps.get_model('document_states', 'Workflow')
+def operation_generate_internal_name(apps, schema_editor):
+    Workflow = apps.get_model(
+        app_label='document_states', model_name='Workflow'
+    )
     internal_names = []
 
     for workflow in Workflow.objects.using(schema_editor.connection.alias).all():
@@ -50,7 +50,8 @@ class Migration(migrations.Migration):
 
         # Generate the slugs based on the labels
         migrations.RunPython(
-            generate_internal_name, reverse_code=migrations.RunPython.noop
+            code=operation_generate_internal_name,
+            reverse_code=migrations.RunPython.noop
         ),
 
         # Make the internal name field unique
diff --git a/mayan/apps/document_states/migrations/0005_auto_20170803_0638.py b/mayan/apps/document_states/migrations/0005_auto_20170803_0638.py
index 22bf7c813f..67d6000eef 100644
--- a/mayan/apps/document_states/migrations/0005_auto_20170803_0638.py
+++ b/mayan/apps/document_states/migrations/0005_auto_20170803_0638.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-03 06:38
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -17,8 +15,19 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='WorkflowTransitionTriggerEvent',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('stored_event_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='trigger_events', to='events.EventType', verbose_name='Event type')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'stored_event_type', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='trigger_events', to='events.EventType',
+                        verbose_name='Event type'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Workflow transition trigger event',
@@ -28,16 +37,29 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='workflowtransition',
             name='trigger_time_period',
-            field=models.PositiveIntegerField(blank=True, help_text='Amount of time after which this transition will trigger on its own.', null=True, verbose_name='Trigger time period'),
+            field=models.PositiveIntegerField(
+                blank=True, help_text='Amount of time after which this '
+                'transition will trigger on its own.', null=True,
+                verbose_name='Trigger time period'
+            ),
         ),
         migrations.AddField(
             model_name='workflowtransition',
             name='trigger_time_unit',
-            field=models.CharField(blank=True, choices=[('days', 'Days'), ('hours', 'Hours'), ('minutes', 'Minutes')], max_length=8, null=True, verbose_name='Trigger time unit'),
+            field=models.CharField(
+                blank=True, choices=[
+                    ('days', 'Days'), ('hours', 'Hours'),
+                    ('minutes', 'Minutes')
+                ], max_length=8, null=True, verbose_name='Trigger time unit'
+            ),
         ),
         migrations.AddField(
             model_name='workflowtransitiontriggerevent',
             name='transition',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='document_states.WorkflowTransition', verbose_name='Transition'),
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                to='document_states.WorkflowTransition',
+                verbose_name='Transition'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_states/migrations/0006_auto_20170803_0651.py b/mayan/apps/document_states/migrations/0006_auto_20170803_0651.py
index 5b73e2189f..aff1ba5952 100644
--- a/mayan/apps/document_states/migrations/0006_auto_20170803_0651.py
+++ b/mayan/apps/document_states/migrations/0006_auto_20170803_0651.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-03 06:51
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/document_states/migrations/0007_auto_20170803_0728.py b/mayan/apps/document_states/migrations/0007_auto_20170803_0728.py
index 81bdbd2c54..903d5c25d2 100644
--- a/mayan/apps/document_states/migrations/0007_auto_20170803_0728.py
+++ b/mayan/apps/document_states/migrations/0007_auto_20170803_0728.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-03 07:28
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -17,16 +15,28 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='workflowinstancelogentry',
             name='user',
-            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL, verbose_name='User'),
+            field=models.ForeignKey(
+                blank=True, null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                to=settings.AUTH_USER_MODEL, verbose_name='User'
+            ),
         ),
         migrations.AlterField(
             model_name='workflowtransitiontriggerevent',
             name='event_type',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='events.EventType', verbose_name='Event type'),
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                to='events.EventType', verbose_name='Event type'
+            ),
         ),
         migrations.AlterField(
             model_name='workflowtransitiontriggerevent',
             name='transition',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='trigger_events', to='document_states.WorkflowTransition', verbose_name='Transition'),
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name='trigger_events',
+                to='document_states.WorkflowTransition',
+                verbose_name='Transition'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_states/migrations/0008_auto_20170803_0752.py b/mayan/apps/document_states/migrations/0008_auto_20170803_0752.py
index 8fa7a56eda..3dad4f2390 100644
--- a/mayan/apps/document_states/migrations/0008_auto_20170803_0752.py
+++ b/mayan/apps/document_states/migrations/0008_auto_20170803_0752.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-03 07:52
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/document_states/migrations/0009_auto_20170807_0612.py b/mayan/apps/document_states/migrations/0009_auto_20170807_0612.py
index e58aeea9b9..371c6f9a61 100644
--- a/mayan/apps/document_states/migrations/0009_auto_20170807_0612.py
+++ b/mayan/apps/document_states/migrations/0009_auto_20170807_0612.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-07 06:12
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -16,13 +14,49 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='WorkflowStateAction',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('label', models.CharField(max_length=255, verbose_name='Label')),
-                ('enabled', models.BooleanField(default=True, verbose_name='Enabled')),
-                ('when', models.PositiveIntegerField(choices=[(1, 'On entry'), (2, 'On exit')], default=1, help_text='At which moment of the state this action will execute', verbose_name='When')),
-                ('action_path', models.CharField(help_text='The dotted Python path to the workflow action class to execute.', max_length=128, verbose_name='Entry action path')),
-                ('action_data', models.TextField(blank=True, verbose_name='Entry action data')),
-                ('state', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='actions', to='document_states.WorkflowState', verbose_name='Workflow state')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'label', models.CharField(
+                        max_length=255, verbose_name='Label'
+                    )
+                ),
+                (
+                    'enabled', models.BooleanField(
+                        default=True, verbose_name='Enabled'
+                    )
+                ),
+                (
+                    'when', models.PositiveIntegerField(
+                        choices=[(1, 'On entry'), (2, 'On exit')], default=1,
+                        help_text='At which moment of the state this action '
+                        'will execute', verbose_name='When'
+                    )
+                ),
+                (
+                    'action_path', models.CharField(
+                        help_text='The dotted Python path to the workflow '
+                        'action class to execute.', max_length=128,
+                        verbose_name='Entry action path'
+                    )
+                ),
+                (
+                    'action_data', models.TextField(
+                        blank=True, verbose_name='Entry action data'
+                    )
+                ),
+                (
+                    'state', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='actions',
+                        to='document_states.WorkflowState',
+                        verbose_name='Workflow state'
+                    )
+                ),
             ],
             options={
                 'ordering': ('label',),
diff --git a/mayan/apps/document_states/migrations/0010_auto_20180310_1717.py b/mayan/apps/document_states/migrations/0010_auto_20180310_1717.py
index a73d4590b9..7d2d957848 100644
--- a/mayan/apps/document_states/migrations/0010_auto_20180310_1717.py
+++ b/mayan/apps/document_states/migrations/0010_auto_20180310_1717.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.10 on 2018-03-10 17:17
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,10 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='workflowinstancelogentry',
-            options={'ordering': ('datetime',), 'verbose_name': 'Workflow instance log entry', 'verbose_name_plural': 'Workflow instance log entries'},
+            options={
+                'ordering': ('datetime',),
+                'verbose_name': 'Workflow instance log entry',
+                'verbose_name_plural': 'Workflow instance log entries'
+            },
         ),
     ]
diff --git a/mayan/apps/document_states/migrations/0011_auto_20180315_0029.py b/mayan/apps/document_states/migrations/0011_auto_20180315_0029.py
index a33232b5b6..0069858b58 100644
--- a/mayan/apps/document_states/migrations/0011_auto_20180315_0029.py
+++ b/mayan/apps/document_states/migrations/0011_auto_20180315_0029.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.10 on 2018-03-15 00:29
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,9 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='workflowinstance',
-            options={'ordering': ('workflow',), 'verbose_name': 'Workflow instance', 'verbose_name_plural': 'Workflow instances'},
+            options={
+                'ordering': ('workflow',), 'verbose_name': 'Workflow instance',
+                'verbose_name_plural': 'Workflow instances'
+            },
         ),
     ]
diff --git a/mayan/apps/document_states/migrations/0012_auto_20180823_2353.py b/mayan/apps/document_states/migrations/0012_auto_20180823_2353.py
index 67cbd21bc7..0100c31874 100644
--- a/mayan/apps/document_states/migrations/0012_auto_20180823_2353.py
+++ b/mayan/apps/document_states/migrations/0012_auto_20180823_2353.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-23 23:53
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='workflowstateaction',
             name='label',
-            field=models.CharField(help_text='A simple identifier for this action.', max_length=255, verbose_name='Label'),
+            field=models.CharField(
+                help_text='A simple identifier for this action.',
+                max_length=255, verbose_name='Label'
+            ),
         ),
     ]
diff --git a/mayan/apps/document_states/migrations/0013_auto_20190423_0810.py b/mayan/apps/document_states/migrations/0013_auto_20190423_0810.py
index da922b9b83..523a3fe72d 100644
--- a/mayan/apps/document_states/migrations/0013_auto_20190423_0810.py
+++ b/mayan/apps/document_states/migrations/0013_auto_20190423_0810.py
@@ -4,18 +4,26 @@ from django.db import migrations
 
 
 def operation_add_full_path(apps, schema_editor):
-    WorkflowStateAction = apps.get_model('document_states', 'WorkflowStateAction')
+    WorkflowStateAction = apps.get_model(
+        app_label='document_states', model_name='WorkflowStateAction'
+    )
 
     for workflow_state_action in WorkflowStateAction.objects.using(schema_editor.connection.alias).all():
-        workflow_state_action.action_path = 'mayan.apps.{}'.format(workflow_state_action.action_path)
+        workflow_state_action.action_path = 'mayan.apps.{}'.format(
+            workflow_state_action.action_path
+        )
         workflow_state_action.save()
 
 
 def operation_remove_full_path(apps, schema_editor):
-    WorkflowStateAction = apps.get_model('document_states', 'WorkflowStateAction')
+    WorkflowStateAction = apps.get_model(
+        app_label='document_states', model_name='WorkflowStateAction'
+    )
 
     for workflow_state_action in WorkflowStateAction.objects.using(schema_editor.connection.alias).all():
-        workflow_state_action.action_path = workflow_state_action.action_path.replace('mayan.apps.', '')
+        workflow_state_action.action_path = workflow_state_action.action_path.replace(
+            'mayan.apps.', ''
+        )
         workflow_state_action.save()
 
 
@@ -27,6 +35,7 @@ class Migration(migrations.Migration):
 
     operations = [
         migrations.RunPython(
-            operation_add_full_path, reverse_code=operation_remove_full_path
+            code=operation_add_full_path,
+            reverse_code=operation_remove_full_path
         )
     ]
diff --git a/mayan/apps/documents/migrations/0001_initial.py b/mayan/apps/documents/migrations/0001_initial.py
index fc5f2011c0..61afeef7dd 100644
--- a/mayan/apps/documents/migrations/0001_initial.py
+++ b/mayan/apps/documents/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0002_auto_20150608_1902.py b/mayan/apps/documents/migrations/0002_auto_20150608_1902.py
index 41ba3e29d6..dd2ffb9650 100644
--- a/mayan/apps/documents/migrations/0002_auto_20150608_1902.py
+++ b/mayan/apps/documents/migrations/0002_auto_20150608_1902.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0003_auto_20150608_1915.py b/mayan/apps/documents/migrations/0003_auto_20150608_1915.py
index 2ff0fc53a2..627981513e 100644
--- a/mayan/apps/documents/migrations/0003_auto_20150608_1915.py
+++ b/mayan/apps/documents/migrations/0003_auto_20150608_1915.py
@@ -1,14 +1,11 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
-import uuid 
+import uuid
 
 from django.db import models, migrations
 from django.core.files.storage import FileSystemStorage
 from django.utils.encoding import force_text
 
-import mayan.apps.documents.models
-
 
 class Migration(migrations.Migration):
 
diff --git a/mayan/apps/documents/migrations/0004_auto_20150616_1930.py b/mayan/apps/documents/migrations/0004_auto_20150616_1930.py
index 481b6e28ad..35b9f5a2cc 100644
--- a/mayan/apps/documents/migrations/0004_auto_20150616_1930.py
+++ b/mayan/apps/documents/migrations/0004_auto_20150616_1930.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0005_auto_20150617_0358.py b/mayan/apps/documents/migrations/0005_auto_20150617_0358.py
index ae74d6ac56..28a21864b2 100644
--- a/mayan/apps/documents/migrations/0005_auto_20150617_0358.py
+++ b/mayan/apps/documents/migrations/0005_auto_20150617_0358.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0006_remove_documentpage_content_old.py b/mayan/apps/documents/migrations/0006_remove_documentpage_content_old.py
index 18f3241e27..09298e2fab 100644
--- a/mayan/apps/documents/migrations/0006_remove_documentpage_content_old.py
+++ b/mayan/apps/documents/migrations/0006_remove_documentpage_content_old.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0007_remove_documentpage_page_label.py b/mayan/apps/documents/migrations/0007_remove_documentpage_page_label.py
index 8b641cb35a..29518f8f3f 100644
--- a/mayan/apps/documents/migrations/0007_remove_documentpage_page_label.py
+++ b/mayan/apps/documents/migrations/0007_remove_documentpage_page_label.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0008_auto_20150624_0520.py b/mayan/apps/documents/migrations/0008_auto_20150624_0520.py
index 2c13023fdd..ff743bdd0c 100644
--- a/mayan/apps/documents/migrations/0008_auto_20150624_0520.py
+++ b/mayan/apps/documents/migrations/0008_auto_20150624_0520.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0009_document_in_trash.py b/mayan/apps/documents/migrations/0009_document_in_trash.py
index 1716aa1700..d26c131892 100644
--- a/mayan/apps/documents/migrations/0009_document_in_trash.py
+++ b/mayan/apps/documents/migrations/0009_document_in_trash.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0010_auto_20150704_0054.py b/mayan/apps/documents/migrations/0010_auto_20150704_0054.py
index cbbb15c8e7..1e3e8e205c 100644
--- a/mayan/apps/documents/migrations/0010_auto_20150704_0054.py
+++ b/mayan/apps/documents/migrations/0010_auto_20150704_0054.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0011_auto_20150704_0508.py b/mayan/apps/documents/migrations/0011_auto_20150704_0508.py
index cea04ef2b9..552fd88761 100644
--- a/mayan/apps/documents/migrations/0011_auto_20150704_0508.py
+++ b/mayan/apps/documents/migrations/0011_auto_20150704_0508.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0012_auto_20150705_0347.py b/mayan/apps/documents/migrations/0012_auto_20150705_0347.py
index 6e2908ddbf..d85c9028f4 100644
--- a/mayan/apps/documents/migrations/0012_auto_20150705_0347.py
+++ b/mayan/apps/documents/migrations/0012_auto_20150705_0347.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0013_document_is_stub.py b/mayan/apps/documents/migrations/0013_document_is_stub.py
index a00df25f50..c2e9c2cd22 100644
--- a/mayan/apps/documents/migrations/0013_document_is_stub.py
+++ b/mayan/apps/documents/migrations/0013_document_is_stub.py
@@ -1,11 +1,10 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
 
 
-def make_existing_documents_not_stubs(apps, schema_editor):
-    Document = apps.get_model('documents', 'Document')
+def operation_make_existing_documents_not_stubs(apps, schema_editor):
+    Document = apps.get_model(app_label='documents', model_name='Document')
 
     for document in Document.objects.using(schema_editor.connection.alias).all():
         document.is_stub = False
@@ -27,5 +26,5 @@ class Migration(migrations.Migration):
             ),
             preserve_default=True,
         ),
-        migrations.RunPython(make_existing_documents_not_stubs),
+        migrations.RunPython(code=operation_make_existing_documents_not_stubs),
     ]
diff --git a/mayan/apps/documents/migrations/0014_auto_20150708_0107.py b/mayan/apps/documents/migrations/0014_auto_20150708_0107.py
index 3a14b54eb3..f9daf05476 100644
--- a/mayan/apps/documents/migrations/0014_auto_20150708_0107.py
+++ b/mayan/apps/documents/migrations/0014_auto_20150708_0107.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0015_auto_20150708_0113.py b/mayan/apps/documents/migrations/0015_auto_20150708_0113.py
index 211968a2d1..f4c8ebd21c 100644
--- a/mayan/apps/documents/migrations/0015_auto_20150708_0113.py
+++ b/mayan/apps/documents/migrations/0015_auto_20150708_0113.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0016_auto_20150708_0325.py b/mayan/apps/documents/migrations/0016_auto_20150708_0325.py
index a0b20e2dc9..28a13a8120 100644
--- a/mayan/apps/documents/migrations/0016_auto_20150708_0325.py
+++ b/mayan/apps/documents/migrations/0016_auto_20150708_0325.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0017_auto_20150714_0056.py b/mayan/apps/documents/migrations/0017_auto_20150714_0056.py
index 2beded23d8..f8bbbeb1a8 100644
--- a/mayan/apps/documents/migrations/0017_auto_20150714_0056.py
+++ b/mayan/apps/documents/migrations/0017_auto_20150714_0056.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0018_auto_20150714_2227.py b/mayan/apps/documents/migrations/0018_auto_20150714_2227.py
index cb31576058..eb6ef66d34 100644
--- a/mayan/apps/documents/migrations/0018_auto_20150714_2227.py
+++ b/mayan/apps/documents/migrations/0018_auto_20150714_2227.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0019_auto_20150714_2232.py b/mayan/apps/documents/migrations/0019_auto_20150714_2232.py
index ea985c441c..36a05091a1 100644
--- a/mayan/apps/documents/migrations/0019_auto_20150714_2232.py
+++ b/mayan/apps/documents/migrations/0019_auto_20150714_2232.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0020_auto_20150714_2233.py b/mayan/apps/documents/migrations/0020_auto_20150714_2233.py
index f7f0aa4cb8..359f3824bc 100644
--- a/mayan/apps/documents/migrations/0020_auto_20150714_2233.py
+++ b/mayan/apps/documents/migrations/0020_auto_20150714_2233.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0021_auto_20150714_2238.py b/mayan/apps/documents/migrations/0021_auto_20150714_2238.py
index 818505442f..9ef989806e 100644
--- a/mayan/apps/documents/migrations/0021_auto_20150714_2238.py
+++ b/mayan/apps/documents/migrations/0021_auto_20150714_2238.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0022_auto_20150715_0258.py b/mayan/apps/documents/migrations/0022_auto_20150715_0258.py
index 2675938b14..51e99d46cd 100644
--- a/mayan/apps/documents/migrations/0022_auto_20150715_0258.py
+++ b/mayan/apps/documents/migrations/0022_auto_20150715_0258.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0023_auto_20150715_0259.py b/mayan/apps/documents/migrations/0023_auto_20150715_0259.py
index fdc1a88a43..3facb57aad 100644
--- a/mayan/apps/documents/migrations/0023_auto_20150715_0259.py
+++ b/mayan/apps/documents/migrations/0023_auto_20150715_0259.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0024_auto_20150715_0714.py b/mayan/apps/documents/migrations/0024_auto_20150715_0714.py
index e5cbd073a9..291f280732 100644
--- a/mayan/apps/documents/migrations/0024_auto_20150715_0714.py
+++ b/mayan/apps/documents/migrations/0024_auto_20150715_0714.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0025_auto_20150718_0742.py b/mayan/apps/documents/migrations/0025_auto_20150718_0742.py
index 573d743ded..1a9053ea27 100644
--- a/mayan/apps/documents/migrations/0025_auto_20150718_0742.py
+++ b/mayan/apps/documents/migrations/0025_auto_20150718_0742.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 import pycountry
@@ -6,8 +5,8 @@ import pycountry
 from django.db import migrations
 
 
-def change_bibliographic_to_terminology(apps, schema_editor):
-    Document = apps.get_model('documents', 'Document')
+def operation_change_bibliographic_to_terminology(apps, schema_editor):
+    Document = apps.get_model(app_label='documents', model_name='Document')
 
     for document in Document.objects.using(schema_editor.connection.alias).all():
         try:
@@ -31,5 +30,5 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(change_bibliographic_to_terminology),
+        migrations.RunPython(code=operation_change_bibliographic_to_terminology),
     ]
diff --git a/mayan/apps/documents/migrations/0027_auto_20150824_0702.py b/mayan/apps/documents/migrations/0027_auto_20150824_0702.py
index 2fa4346cd3..8350e31e81 100644
--- a/mayan/apps/documents/migrations/0027_auto_20150824_0702.py
+++ b/mayan/apps/documents/migrations/0027_auto_20150824_0702.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0028_newversionblock.py b/mayan/apps/documents/migrations/0028_newversionblock.py
index 98e809aaa3..98d4c55a8c 100644
--- a/mayan/apps/documents/migrations/0028_newversionblock.py
+++ b/mayan/apps/documents/migrations/0028_newversionblock.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/documents/migrations/0030_auto_20160309_1837.py b/mayan/apps/documents/migrations/0030_auto_20160309_1837.py
index 7083daa277..a8ef71eedd 100644
--- a/mayan/apps/documents/migrations/0030_auto_20160309_1837.py
+++ b/mayan/apps/documents/migrations/0030_auto_20160309_1837.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/documents/migrations/0031_convert_uuid.py b/mayan/apps/documents/migrations/0031_convert_uuid.py
index 10ef81a35f..87c3561919 100644
--- a/mayan/apps/documents/migrations/0031_convert_uuid.py
+++ b/mayan/apps/documents/migrations/0031_convert_uuid.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 import uuid
@@ -6,8 +5,8 @@ import uuid
 from django.db import migrations
 
 
-def convert_uuid_to_hex(apps, schema_editor):
-    Document = apps.get_model('documents', 'Document')
+def operation_convert_uuid_to_hex(apps, schema_editor):
+    Document = apps.get_model(app_label='documents', model_name='Document')
 
     for document in Document.objects.using(schema_editor.connection.alias).all():
         document.uuid = uuid.UUID(document.uuid).hex
@@ -21,5 +20,5 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(convert_uuid_to_hex),
+        migrations.RunPython(code=operation_convert_uuid_to_hex),
     ]
diff --git a/mayan/apps/documents/migrations/0032_auto_20160315_0537.py b/mayan/apps/documents/migrations/0032_auto_20160315_0537.py
index afa3edeb29..91573f9485 100644
--- a/mayan/apps/documents/migrations/0032_auto_20160315_0537.py
+++ b/mayan/apps/documents/migrations/0032_auto_20160315_0537.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 import uuid
@@ -6,7 +5,7 @@ import uuid
 from django.db import connection, migrations, models
 
 
-def forwards(apps, schema_editor):
+def operation_forwards(apps, schema_editor):
     if not schema_editor.connection.vendor == 'oracle':
         # Skip this migration for Oracle
         # GitHub issue #251
@@ -23,7 +22,7 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(forwards)
+        migrations.RunPython(code=operation_forwards)
     ]
 
     def __init__(self, *args, **kwargs):
diff --git a/mayan/apps/documents/migrations/0033_auto_20160325_0052.py b/mayan/apps/documents/migrations/0033_auto_20160325_0052.py
index 34132feecb..7acfe6eeaf 100644
--- a/mayan/apps/documents/migrations/0033_auto_20160325_0052.py
+++ b/mayan/apps/documents/migrations/0033_auto_20160325_0052.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0034_auto_20160509_2321.py b/mayan/apps/documents/migrations/0034_auto_20160509_2321.py
index bdcae825f8..92e9b8888f 100644
--- a/mayan/apps/documents/migrations/0034_auto_20160509_2321.py
+++ b/mayan/apps/documents/migrations/0034_auto_20160509_2321.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -14,11 +13,20 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='document',
             name='in_trash',
-            field=models.BooleanField(default=False, verbose_name='In trash?', db_index=True, editable=False),
+            field=models.BooleanField(
+                default=False, verbose_name='In trash?', db_index=True,
+                editable=False
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='is_stub',
-            field=models.BooleanField(default=True, editable=False, help_text='A document stub is a document with an entry on the database but no file uploaded. This could be an interrupted upload or a deferred upload via the API.', verbose_name='Is stub?', db_index=True),
+            field=models.BooleanField(
+                default=True, editable=False,
+                help_text='A document stub is a document with an entry on '
+                'the database but no file uploaded. This could be an '
+                'interrupted upload or a deferred upload via the API.',
+                verbose_name='Is stub?', db_index=True
+            ),
         ),
     ]
diff --git a/mayan/apps/documents/migrations/0035_auto_20161102_0633.py b/mayan/apps/documents/migrations/0035_auto_20161102_0633.py
index 65629625e0..47f54be51a 100644
--- a/mayan/apps/documents/migrations/0035_auto_20161102_0633.py
+++ b/mayan/apps/documents/migrations/0035_auto_20161102_0633.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/documents/migrations/0036_auto_20161222_0534.py b/mayan/apps/documents/migrations/0036_auto_20161222_0534.py
index df8e31754f..11dd5a84ba 100644
--- a/mayan/apps/documents/migrations/0036_auto_20161222_0534.py
+++ b/mayan/apps/documents/migrations/0036_auto_20161222_0534.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.9.11 on 2016-12-22 05:34
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/documents/migrations/0037_auto_20161231_0617.py b/mayan/apps/documents/migrations/0037_auto_20161231_0617.py
index b8bcf6c651..0f9e095dec 100644
--- a/mayan/apps/documents/migrations/0037_auto_20161231_0617.py
+++ b/mayan/apps/documents/migrations/0037_auto_20161231_0617.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.4 on 2016-12-31 06:17
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='document',
             name='language',
-            field=models.CharField(blank=True, default='eng', max_length=8, verbose_name='Language'),
+            field=models.CharField(
+                blank=True, default='eng', max_length=8,
+                verbose_name='Language'
+            ),
         ),
     ]
diff --git a/mayan/apps/documents/migrations/0038_auto_20170705_2008.py b/mayan/apps/documents/migrations/0038_auto_20170705_2008.py
index 6290b5c37b..6297762dc5 100644
--- a/mayan/apps/documents/migrations/0038_auto_20170705_2008.py
+++ b/mayan/apps/documents/migrations/0038_auto_20170705_2008.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-05 20:08
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/documents/migrations/0039_duplicateddocument.py b/mayan/apps/documents/migrations/0039_duplicateddocument.py
index c2e7cc0c97..39b7a8a601 100644
--- a/mayan/apps/documents/migrations/0039_duplicateddocument.py
+++ b/mayan/apps/documents/migrations/0039_duplicateddocument.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-06 03:30
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/documents/migrations/0040_auto_20170725_1111.py b/mayan/apps/documents/migrations/0040_auto_20170725_1111.py
index 0412801f6b..c2494bfbec 100644
--- a/mayan/apps/documents/migrations/0040_auto_20170725_1111.py
+++ b/mayan/apps/documents/migrations/0040_auto_20170725_1111.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-25 11:11
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,9 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='documentversion',
-            options={'ordering': ('timestamp',), 'verbose_name': 'Document version', 'verbose_name_plural': 'Document version'},
+            options={
+                'ordering': ('timestamp',), 'verbose_name': 'Document version',
+                'verbose_name_plural': 'Document version'
+            },
         ),
     ]
diff --git a/mayan/apps/documents/migrations/0041_auto_20170823_1855.py b/mayan/apps/documents/migrations/0041_auto_20170823_1855.py
index fcc01e0c6f..bec0767cdd 100644
--- a/mayan/apps/documents/migrations/0041_auto_20170823_1855.py
+++ b/mayan/apps/documents/migrations/0041_auto_20170823_1855.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-23 18:55
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/documents/migrations/0042_auto_20180403_0702.py b/mayan/apps/documents/migrations/0042_auto_20180403_0702.py
index d7ffc318b7..798626a821 100644
--- a/mayan/apps/documents/migrations/0042_auto_20180403_0702.py
+++ b/mayan/apps/documents/migrations/0042_auto_20180403_0702.py
@@ -1,13 +1,11 @@
 from __future__ import unicode_literals
 
-import uuid 
+import uuid
 
 import django.core.files.storage
 from django.db import migrations, models
 from django.utils.encoding import force_text
 
-import mayan.apps.documents.models
-
 
 class Migration(migrations.Migration):
 
diff --git a/mayan/apps/documents/migrations/0043_auto_20180429_0759.py b/mayan/apps/documents/migrations/0043_auto_20180429_0759.py
index fb9a24245e..9dacaf7d2b 100644
--- a/mayan/apps/documents/migrations/0043_auto_20180429_0759.py
+++ b/mayan/apps/documents/migrations/0043_auto_20180429_0759.py
@@ -6,8 +6,6 @@ import django.core.files.storage
 from django.db import migrations, models
 from django.utils.encoding import force_text
 
-import mayan.apps.documents.models
-
 
 class Migration(migrations.Migration):
 
@@ -19,7 +17,10 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentversion',
             name='encoding',
-            field=models.CharField(blank=True, editable=False, max_length=64, null=True, verbose_name='Encoding'),
+            field=models.CharField(
+                blank=True, editable=False, max_length=64, null=True,
+                verbose_name='Encoding'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
@@ -33,6 +34,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentversion',
             name='mimetype',
-            field=models.CharField(blank=True, editable=False, max_length=255, null=True, verbose_name='MIME type'),
+            field=models.CharField(
+                blank=True, editable=False, max_length=255, null=True,
+                verbose_name='MIME type'
+            ),
         ),
     ]
diff --git a/mayan/apps/documents/migrations/0044_auto_20180823_0452.py b/mayan/apps/documents/migrations/0044_auto_20180823_0452.py
index d5bececed8..f9554bc869 100644
--- a/mayan/apps/documents/migrations/0044_auto_20180823_0452.py
+++ b/mayan/apps/documents/migrations/0044_auto_20180823_0452.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-23 04:52
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -18,7 +16,12 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='FavoriteDocument',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Favorite document',
@@ -27,21 +30,35 @@ class Migration(migrations.Migration):
         ),
         migrations.AlterModelOptions(
             name='document',
-            options={'ordering': ('label',), 'verbose_name': 'Document', 'verbose_name_plural': 'Documents'},
+            options={
+                'ordering': ('label',), 'verbose_name': 'Document',
+                'verbose_name_plural': 'Documents'
+            },
         ),
         migrations.AlterField(
             model_name='recentdocument',
             name='document',
-            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, related_name='recent', to='documents.Document', verbose_name='Document'),
+            field=models.ForeignKey(
+                editable=False, on_delete=django.db.models.deletion.CASCADE,
+                related_name='recent', to='documents.Document',
+                verbose_name='Document'
+            ),
         ),
         migrations.AddField(
             model_name='favoritedocument',
             name='document',
-            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, related_name='favorites', to='documents.Document', verbose_name='Document'),
+            field=models.ForeignKey(
+                editable=False, on_delete=django.db.models.deletion.CASCADE,
+                related_name='favorites', to='documents.Document',
+                verbose_name='Document'
+            ),
         ),
         migrations.AddField(
             model_name='favoritedocument',
             name='user',
-            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL, verbose_name='User'),
+            field=models.ForeignKey(
+                editable=False, on_delete=django.db.models.deletion.CASCADE,
+                to=settings.AUTH_USER_MODEL, verbose_name='User'
+            ),
         ),
     ]
diff --git a/mayan/apps/documents/migrations/0045_auto_20180917_0645.py b/mayan/apps/documents/migrations/0045_auto_20180917_0645.py
index 8fb020a884..b525cd9921 100644
--- a/mayan/apps/documents/migrations/0045_auto_20180917_0645.py
+++ b/mayan/apps/documents/migrations/0045_auto_20180917_0645.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 06:45
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -16,66 +14,120 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='document',
             name='date_added',
-            field=models.DateTimeField(auto_now_add=True, db_index=True, help_text='The server date and time when the document was finally processed and added to the system.', verbose_name='Added'),
+            field=models.DateTimeField(
+                auto_now_add=True, db_index=True, help_text='The server '
+                'date and time when the document was finally processed '
+                'and added to the system.', verbose_name='Added'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='deleted_date_time',
-            field=models.DateTimeField(blank=True, help_text='The server date and time when the document was moved to the trash.', null=True, verbose_name='Date and time trashed'),
+            field=models.DateTimeField(
+                blank=True, help_text='The server date and time when the '
+                'document was moved to the trash.', null=True,
+                verbose_name='Date and time trashed'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='description',
-            field=models.TextField(blank=True, default='', help_text='An optional short text describing a document.', verbose_name='Description'),
+            field=models.TextField(
+                blank=True, default='', help_text='An optional short text '
+                'describing a document.', verbose_name='Description'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='in_trash',
-            field=models.BooleanField(db_index=True, default=False, editable=False, help_text='Whether or not this document is in the trash.', verbose_name='In trash?'),
+            field=models.BooleanField(
+                db_index=True, default=False, editable=False,
+                help_text='Whether or not this document is in the trash.',
+                verbose_name='In trash?'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='label',
-            field=models.CharField(blank=True, db_index=True, default='', help_text='The name of the document.', max_length=255, verbose_name='Label'),
+            field=models.CharField(
+                blank=True, db_index=True, default='', help_text='The name '
+                'of the document.', max_length=255, verbose_name='Label'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='language',
-            field=models.CharField(blank=True, default=b'eng', help_text='The dominant language in the document.', max_length=8, verbose_name='Language'),
+            field=models.CharField(
+                blank=True, default=b'eng', help_text='The dominant '
+                'language in the document.', max_length=8,
+                verbose_name='Language'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='uuid',
-            field=models.UUIDField(default=uuid.uuid4, editable=False, help_text='UUID of a document, universally Unique ID. An unique identifiergenerated for each document.', verbose_name='UUID'),
+            field=models.UUIDField(
+                default=uuid.uuid4, editable=False, help_text='UUID of a '
+                'document, universally Unique ID. An unique identifier '
+                'generated for each document.', verbose_name='UUID'
+            ),
         ),
         migrations.AlterField(
             model_name='documenttype',
             name='label',
-            field=models.CharField(help_text='The name of the document type.', max_length=32, unique=True, verbose_name='Label'),
+            field=models.CharField(
+                help_text='The name of the document type.', max_length=32,
+                unique=True, verbose_name='Label'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='checksum',
-            field=models.CharField(blank=True, db_index=True, editable=False, help_text="A hash/checkdigit/fingerprint generated from the document's binary data. Only identical documents will have the same checksum.", max_length=64, null=True, verbose_name='Checksum'),
+            field=models.CharField(
+                blank=True, db_index=True, editable=False,
+                help_text="A hash/checkdigit/fingerprint generated from "
+                "the document's binary data. Only identical documents will "
+                "have the same checksum.", max_length=64, null=True,
+                verbose_name='Checksum'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='comment',
-            field=models.TextField(blank=True, default='', help_text='An optional short text describing the document version.', verbose_name='Comment'),
+            field=models.TextField(
+                blank=True, default='', help_text='An optional short text '
+                'describing the document version.', verbose_name='Comment'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='encoding',
-            field=models.CharField(blank=True, editable=False, help_text='The document version file encoding. binary 7-bit, binary 8-bit, text, base64, etc.', max_length=64, null=True, verbose_name='Encoding'),
+            field=models.CharField(
+                blank=True, editable=False, help_text='The document version '
+                'file encoding. binary 7-bit, binary 8-bit, text, '
+                'base64, etc.', max_length=64, null=True,
+                verbose_name='Encoding'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='mimetype',
-            field=models.CharField(blank=True, editable=False, help_text='The document version\'s file mimetype. MIME types are a standard way to describe the format of a file, in this case the file format of the document. Some examples: "text/plain" or "image/jpeg". ', max_length=255, null=True, verbose_name='MIME type'),
+            field=models.CharField(
+                blank=True, editable=False, help_text='The document '
+                'version\'s file mimetype. MIME types are a standard way '
+                'to describe the format of a file, in this case the file '
+                'format of the document. Some examples: "text/plain" '
+                'or "image/jpeg". ', max_length=255, null=True,
+                verbose_name='MIME type'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='timestamp',
-            field=models.DateTimeField(auto_now_add=True, db_index=True, help_text='The server date and time when the document version was processed.', verbose_name='Timestamp'),
+            field=models.DateTimeField(
+                auto_now_add=True, db_index=True, help_text='The server '
+                'date and time when the document version was processed.',
+                verbose_name='Timestamp'
+            ),
         ),
     ]
diff --git a/mayan/apps/documents/migrations/0046_auto_20180917_0713.py b/mayan/apps/documents/migrations/0046_auto_20180917_0713.py
index 7e2ceda47f..45a3b946ad 100644
--- a/mayan/apps/documents/migrations/0046_auto_20180917_0713.py
+++ b/mayan/apps/documents/migrations/0046_auto_20180917_0713.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 07:13
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documenttype',
             name='label',
-            field=models.CharField(help_text='The name of the document type.', max_length=96, unique=True, verbose_name='Label'),
+            field=models.CharField(
+                help_text='The name of the document type.', max_length=96,
+                unique=True, verbose_name='Label'
+            ),
         ),
     ]
diff --git a/mayan/apps/documents/migrations/0047_auto_20180917_0737.py b/mayan/apps/documents/migrations/0047_auto_20180917_0737.py
index 3f9e50501e..aca42dc519 100644
--- a/mayan/apps/documents/migrations/0047_auto_20180917_0737.py
+++ b/mayan/apps/documents/migrations/0047_auto_20180917_0737.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 07:37
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -16,12 +14,17 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='documentpagecachedimage',
             name='datetime',
-            field=models.DateTimeField(auto_now_add=True, db_index=True, default=django.utils.timezone.now, verbose_name='Date time'),
+            field=models.DateTimeField(
+                auto_now_add=True, db_index=True,
+                default=django.utils.timezone.now, verbose_name='Date time'
+            ),
             preserve_default=False,
         ),
         migrations.AddField(
             model_name='documentpagecachedimage',
             name='file_size',
-            field=models.PositiveIntegerField(db_index=True, default=0, verbose_name='File size'),
+            field=models.PositiveIntegerField(
+                db_index=True, default=0, verbose_name='File size'
+            ),
         ),
     ]
diff --git a/mayan/apps/documents/models/document_page_models.py b/mayan/apps/documents/models/document_page_models.py
index cd4e5274c0..b5a1661bd8 100644
--- a/mayan/apps/documents/models/document_page_models.py
+++ b/mayan/apps/documents/models/document_page_models.py
@@ -239,7 +239,6 @@ class DocumentPage(models.Model):
                 storage_documentimagecache.delete(cache_filename)
                 raise
 
-
     def invalidate_cache(self):
         storage_documentimagecache.delete(self.cache_filename)
         for cached_image in self.cached_images.all():
diff --git a/mayan/apps/documents/tests/test_statistics.py b/mayan/apps/documents/tests/test_statistics.py
index dea2499776..5f342b8b42 100644
--- a/mayan/apps/documents/tests/test_statistics.py
+++ b/mayan/apps/documents/tests/test_statistics.py
@@ -15,4 +15,3 @@ class DocumentStatisticsTestCase(BaseTestCase):
                     'Error executing: {};  {}'.format(statistic, exception)
                 )
                 raise
-
diff --git a/mayan/apps/dynamic_search/migrations/0001_initial.py b/mayan/apps/dynamic_search/migrations/0001_initial.py
index 8a48caddfa..313e9bbb46 100644
--- a/mayan/apps/dynamic_search/migrations/0001_initial.py
+++ b/mayan/apps/dynamic_search/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/dynamic_search/migrations/0002_auto_20150920_0202.py b/mayan/apps/dynamic_search/migrations/0002_auto_20150920_0202.py
index 9822bce45d..c499b059b2 100644
--- a/mayan/apps/dynamic_search/migrations/0002_auto_20150920_0202.py
+++ b/mayan/apps/dynamic_search/migrations/0002_auto_20150920_0202.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/dynamic_search/migrations/0003_auto_20161028_0707.py b/mayan/apps/dynamic_search/migrations/0003_auto_20161028_0707.py
index 41d34f3e20..59914768d4 100644
--- a/mayan/apps/dynamic_search/migrations/0003_auto_20161028_0707.py
+++ b/mayan/apps/dynamic_search/migrations/0003_auto_20161028_0707.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/events/classes.py b/mayan/apps/events/classes.py
index fea995efe0..66feb551b8 100644
--- a/mayan/apps/events/classes.py
+++ b/mayan/apps/events/classes.py
@@ -176,7 +176,9 @@ class EventType(object):
 
     def get_stored_event_type(self):
         if not self.stored_event_type:
-            StoredEventType = apps.get_model('events', 'StoredEventType')
+            StoredEventType = apps.get_model(
+                app_label='events', model_name='StoredEventType'
+            )
 
             self.stored_event_type, created = StoredEventType.objects.get_or_create(
                 name=self.id
diff --git a/mayan/apps/events/migrations/0001_initial.py b/mayan/apps/events/migrations/0001_initial.py
index 07de839d6f..609ae3fcd2 100644
--- a/mayan/apps/events/migrations/0001_initial.py
+++ b/mayan/apps/events/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/events/migrations/0002_eventsubscription.py b/mayan/apps/events/migrations/0002_eventsubscription.py
index 8c84935e1a..fb54172e46 100644
--- a/mayan/apps/events/migrations/0002_eventsubscription.py
+++ b/mayan/apps/events/migrations/0002_eventsubscription.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-29 07:04
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -18,9 +16,24 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='EventSubscription',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('event_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='subscriptions', to='events.EventType', verbose_name='Event type')),
-                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL, verbose_name='User')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'event_type', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='subscriptions', to='events.EventType', verbose_name='Event type'
+                    )
+                ),
+                (
+                    'user', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to=settings.AUTH_USER_MODEL, verbose_name='User'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Event subscription',
diff --git a/mayan/apps/events/migrations/0003_notification.py b/mayan/apps/events/migrations/0003_notification.py
index 343ac7b91c..974e4a4de8 100644
--- a/mayan/apps/events/migrations/0003_notification.py
+++ b/mayan/apps/events/migrations/0003_notification.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-29 07:23
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -19,10 +17,31 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='Notification',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('read', models.BooleanField(default=False, verbose_name='Read')),
-                ('action', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='notifications', to='actstream.Action', verbose_name='Action')),
-                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='notifications', to=settings.AUTH_USER_MODEL, verbose_name='User')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'read', models.BooleanField(
+                        default=False, verbose_name='Read'
+                    )
+                ),
+                (
+                    'action', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='notifications', to='actstream.Action',
+                        verbose_name='Action'
+                    )
+                ),
+                (
+                    'user', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='notifications',
+                        to=settings.AUTH_USER_MODEL, verbose_name='User'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Notification',
diff --git a/mayan/apps/events/migrations/0004_auto_20170731_0423.py b/mayan/apps/events/migrations/0004_auto_20170731_0423.py
index af9d7379b0..6b69f38b49 100644
--- a/mayan/apps/events/migrations/0004_auto_20170731_0423.py
+++ b/mayan/apps/events/migrations/0004_auto_20170731_0423.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-31 04:23
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -20,7 +18,10 @@ class Migration(migrations.Migration):
         ),
         migrations.AlterModelOptions(
             name='storedeventtype',
-            options={'verbose_name': 'Stored event type', 'verbose_name_plural': 'Stored event types'},
+            options={
+                'verbose_name': 'Stored event type',
+                'verbose_name_plural': 'Stored event types'
+            },
         ),
         migrations.RemoveField(
             model_name='eventsubscription',
@@ -29,12 +30,20 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='eventsubscription',
             name='stored_event_type',
-            field=models.ForeignKey(default=1, on_delete=django.db.models.deletion.CASCADE, related_name='event_subscriptions', to='events.StoredEventType', verbose_name='Event type'),
+            field=models.ForeignKey(
+                default=1, on_delete=django.db.models.deletion.CASCADE,
+                related_name='event_subscriptions', to='events.StoredEventType',
+                verbose_name='Event type'
+            ),
             preserve_default=False,
         ),
         migrations.AlterField(
             model_name='eventsubscription',
             name='user',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='event_subscriptions', to=settings.AUTH_USER_MODEL, verbose_name='User'),
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name='event_subscriptions', to=settings.AUTH_USER_MODEL,
+                verbose_name='User'
+            ),
         ),
     ]
diff --git a/mayan/apps/events/migrations/0005_auto_20170731_0452.py b/mayan/apps/events/migrations/0005_auto_20170731_0452.py
index fe36950fac..fef2abcb88 100644
--- a/mayan/apps/events/migrations/0005_auto_20170731_0452.py
+++ b/mayan/apps/events/migrations/0005_auto_20170731_0452.py
@@ -5,9 +5,11 @@ import re
 from django.db import migrations
 
 
-def update_event_types_names(apps, schema_editor):
-    Action = apps.get_model('actstream', 'Action')
-    StoredEventType = apps.get_model('events', 'StoredEventType')
+def operation_update_event_types_names(apps, schema_editor):
+    Action = apps.get_model(app_label='actstream', model_name='Action')
+    StoredEventType = apps.get_model(
+        app_label='events', model_name='StoredEventType'
+    )
 
     known_namespaces = {
         'documents_': 'documents.',
@@ -33,9 +35,11 @@ def update_event_types_names(apps, schema_editor):
         action.save()
 
 
-def revert_event_types_names(apps, schema_editor):
-    Action = apps.get_model('actstream', 'Action')
-    StoredEventType = apps.get_model('events', 'StoredEventType')
+def operation_revert_event_types_names(apps, schema_editor):
+    Action = apps.get_model(app_label='actstream', model_name='Action')
+    StoredEventType = apps.get_model(
+        app_label='events', model_name='StoredEventType'
+    )
 
     known_namespaces = {
         r'documents\.': 'documents_',
@@ -78,7 +82,7 @@ class Migration(migrations.Migration):
 
     operations = [
         migrations.RunPython(
-            code=update_event_types_names,
-            reverse_code=revert_event_types_names
+            code=operation_update_event_types_names,
+            reverse_code=operation_revert_event_types_names
         ),
     ]
diff --git a/mayan/apps/events/migrations/0006_objecteventsubscription.py b/mayan/apps/events/migrations/0006_objecteventsubscription.py
index 15094ce433..01368bd838 100644
--- a/mayan/apps/events/migrations/0006_objecteventsubscription.py
+++ b/mayan/apps/events/migrations/0006_objecteventsubscription.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-31 06:40
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -19,11 +17,33 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='ObjectEventSubscription',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
                 ('object_id', models.PositiveIntegerField()),
-                ('content_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='contenttypes.ContentType')),
-                ('stored_event_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='object_subscriptions', to='events.StoredEventType', verbose_name='Event type')),
-                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='object_subscriptions', to=settings.AUTH_USER_MODEL, verbose_name='User')),
+                (
+                    'content_type', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to='contenttypes.ContentType'
+                    )
+                ),
+                (
+                    'stored_event_type', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='object_subscriptions',
+                        to='events.StoredEventType', verbose_name='Event type'
+                    )
+                ),
+                (
+                    'user', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='object_subscriptions',
+                        to=settings.AUTH_USER_MODEL, verbose_name='User'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Object event subscription',
diff --git a/mayan/apps/events/migrations/0007_auto_20170802_0823.py b/mayan/apps/events/migrations/0007_auto_20170802_0823.py
index 444b27388e..1004618065 100644
--- a/mayan/apps/events/migrations/0007_auto_20170802_0823.py
+++ b/mayan/apps/events/migrations/0007_auto_20170802_0823.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-02 08:23
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,10 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='notification',
-            options={'ordering': ('-action__timestamp',), 'verbose_name': 'Notification', 'verbose_name_plural': 'Notifications'},
+            options={
+                'ordering': ('-action__timestamp',),
+                'verbose_name': 'Notification',
+                'verbose_name_plural': 'Notifications'
+            },
         ),
     ]
diff --git a/mayan/apps/events/migrations/0008_auto_20180315_0029.py b/mayan/apps/events/migrations/0008_auto_20180315_0029.py
index cce91656c5..78ed93deff 100644
--- a/mayan/apps/events/migrations/0008_auto_20180315_0029.py
+++ b/mayan/apps/events/migrations/0008_auto_20180315_0029.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.10 on 2018-03-15 00:29
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -16,6 +14,10 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='eventsubscription',
             name='stored_event_type',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='event_subscriptions', to='events.StoredEventType', verbose_name='Event type'),
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name='event_subscriptions',
+                to='events.StoredEventType', verbose_name='Event type'
+            ),
         ),
     ]
diff --git a/mayan/apps/file_metadata/migrations/0001_initial.py b/mayan/apps/file_metadata/migrations/0001_initial.py
index b27de7e1da..54d70e1ab9 100644
--- a/mayan/apps/file_metadata/migrations/0001_initial.py
+++ b/mayan/apps/file_metadata/migrations/0001_initial.py
@@ -37,9 +37,26 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='DocumentTypeSettings',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('auto_process', models.BooleanField(default=True, verbose_name='Automatically queue newly created documents for processing.')),
-                ('document_type', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='file_metadata_settings', to='documents.DocumentType', verbose_name='Document type')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'auto_process', models.BooleanField(
+                        default=True, verbose_name='Automatically queue newly '
+                        'created documents for processing.'
+                    )
+                ),
+                (
+                    'document_type', models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='file_metadata_settings',
+                        to='documents.DocumentType',
+                        verbose_name='Document type'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Document type settings',
@@ -49,8 +66,20 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='DocumentVersionDriverEntry',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('document_version', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='file_metadata_drivers', to='documents.DocumentVersion', verbose_name='Document version')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'document_version', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='file_metadata_drivers',
+                        to='documents.DocumentVersion',
+                        verbose_name='Document version'
+                    )
+                ),
             ],
             options={
                 'ordering': ('document_version', 'driver'),
@@ -61,10 +90,32 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='FileMetadataEntry',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('key', models.CharField(db_index=True, help_text='Name of the file metadata entry.', max_length=255, verbose_name='Key')),
-                ('value', models.CharField(db_index=True, help_text='Value of the file metadata entry.', max_length=255, verbose_name='Value')),
-                ('document_version_driver_entry', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='entries', to='file_metadata.DocumentVersionDriverEntry', verbose_name='Document version driver entry')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'key', models.CharField(
+                        db_index=True, help_text='Name of the file metadata '
+                        'entry.', max_length=255, verbose_name='Key'
+                    )
+                ),
+                (
+                    'value', models.CharField(
+                        db_index=True, help_text='Value of the file metadata '
+                        'entry.', max_length=255, verbose_name='Value'
+                    )
+                ),
+                (
+                    'document_version_driver_entry', models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='entries',
+                        to='file_metadata.DocumentVersionDriverEntry',
+                        verbose_name='Document version driver entry'
+                    )
+                ),
             ],
             options={
                 'ordering': ('key', 'value'),
@@ -75,9 +126,23 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='StoredDriver',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('driver_path', models.CharField(max_length=255, verbose_name='Driver path')),
-                ('internal_name', models.CharField(db_index=True, max_length=128, verbose_name='Internal name')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'driver_path', models.CharField(
+                        max_length=255, verbose_name='Driver path'
+                    )
+                ),
+                (
+                    'internal_name', models.CharField(
+                        db_index=True, max_length=128,
+                        verbose_name='Internal name'
+                    )
+                ),
             ],
             options={
                 'ordering': ('internal_name',),
@@ -88,7 +153,11 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='documentversiondriverentry',
             name='driver',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='driver_entries', to='file_metadata.StoredDriver', verbose_name='Driver'),
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name='driver_entries',
+                to='file_metadata.StoredDriver', verbose_name='Driver'
+            ),
         ),
         migrations.AlterUniqueTogether(
             name='documentversiondriverentry',
diff --git a/mayan/apps/linking/migrations/0001_initial.py b/mayan/apps/linking/migrations/0001_initial.py
index a6757b5da5..301f950a3e 100644
--- a/mayan/apps/linking/migrations/0001_initial.py
+++ b/mayan/apps/linking/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/linking/migrations/0002_resolvedsmartlink.py b/mayan/apps/linking/migrations/0002_resolvedsmartlink.py
index 4be3b71bd8..e05c9b4df7 100644
--- a/mayan/apps/linking/migrations/0002_resolvedsmartlink.py
+++ b/mayan/apps/linking/migrations/0002_resolvedsmartlink.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/linking/migrations/0003_auto_20150708_0318.py b/mayan/apps/linking/migrations/0003_auto_20150708_0318.py
index a330b53136..ed42a710ce 100644
--- a/mayan/apps/linking/migrations/0003_auto_20150708_0318.py
+++ b/mayan/apps/linking/migrations/0003_auto_20150708_0318.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/linking/migrations/0004_auto_20150708_0320.py b/mayan/apps/linking/migrations/0004_auto_20150708_0320.py
index c4462144c4..c6b7856c9b 100644
--- a/mayan/apps/linking/migrations/0004_auto_20150708_0320.py
+++ b/mayan/apps/linking/migrations/0004_auto_20150708_0320.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/linking/migrations/0005_auto_20150729_2344.py b/mayan/apps/linking/migrations/0005_auto_20150729_2344.py
index 4cde916d9c..6eaa7620e3 100644
--- a/mayan/apps/linking/migrations/0005_auto_20150729_2344.py
+++ b/mayan/apps/linking/migrations/0005_auto_20150729_2344.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/linking/migrations/0006_auto_20180402_0339.py b/mayan/apps/linking/migrations/0006_auto_20180402_0339.py
index f8f5f8b0bc..5199dae307 100644
--- a/mayan/apps/linking/migrations/0006_auto_20180402_0339.py
+++ b/mayan/apps/linking/migrations/0006_auto_20180402_0339.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-02 03:39
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -14,11 +12,16 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='smartlink',
-            options={'ordering': ('label',), 'verbose_name': 'Smart link', 'verbose_name_plural': 'Smart links'},
+            options={
+                'ordering': ('label',), 'verbose_name': 'Smart link',
+                'verbose_name_plural': 'Smart links'
+            },
         ),
         migrations.AlterField(
             model_name='smartlink',
             name='label',
-            field=models.CharField(db_index=True, max_length=96, verbose_name='Label'),
+            field=models.CharField(
+                db_index=True, max_length=96, verbose_name='Label'
+            ),
         ),
     ]
diff --git a/mayan/apps/linking/migrations/0007_auto_20180823_2353.py b/mayan/apps/linking/migrations/0007_auto_20180823_2353.py
index 9482d31d15..5543b7f44c 100644
--- a/mayan/apps/linking/migrations/0007_auto_20180823_2353.py
+++ b/mayan/apps/linking/migrations/0007_auto_20180823_2353.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-23 23:53
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,11 +13,23 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='smartlink',
             name='dynamic_label',
-            field=models.CharField(blank=True, help_text="Enter a template to render. Use Django's default templating language (https://docs.djangoproject.com/en/1.11/ref/templates/builtins/). The {{ document }} context variable is available.", max_length=96, verbose_name='Dynamic label'),
+            field=models.CharField(
+                blank=True, help_text="Enter a template to render. Use "
+                "Django's default templating language "
+                "(https://docs.djangoproject.com/en/1.11/ref/templates/builtins/). "
+                "The {{ document }} context variable is available.",
+                max_length=96, verbose_name='Dynamic label'
+            ),
         ),
         migrations.AlterField(
             model_name='smartlinkcondition',
             name='expression',
-            field=models.TextField(help_text="Enter a template to render. Use Django's default templating language (https://docs.djangoproject.com/en/1.11/ref/templates/builtins/). The {{ document }} context variable is available.", verbose_name='Expression'),
+            field=models.TextField(
+                help_text="Enter a template to render. Use Django's default "
+                "templating language "
+                "(https://docs.djangoproject.com/en/1.11/ref/templates/builtins/). "
+                "The {{ document }} context variable is available.",
+                verbose_name='Expression'
+            ),
         ),
     ]
diff --git a/mayan/apps/linking/migrations/0008_auto_20190429_1922.py b/mayan/apps/linking/migrations/0008_auto_20190429_1922.py
index 9d7a265139..eb71f6e587 100644
--- a/mayan/apps/linking/migrations/0008_auto_20190429_1922.py
+++ b/mayan/apps/linking/migrations/0008_auto_20190429_1922.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.20 on 2019-04-29 19:22
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='smartlink',
             name='document_types',
-            field=models.ManyToManyField(related_name='smart_links', to='documents.DocumentType', verbose_name='Document types'),
+            field=models.ManyToManyField(
+                related_name='smart_links', to='documents.DocumentType',
+                verbose_name='Document types'
+            ),
         ),
     ]
diff --git a/mayan/apps/lock_manager/migrations/0001_initial.py b/mayan/apps/lock_manager/migrations/0001_initial.py
index f0c561617f..68d0e3f782 100644
--- a/mayan/apps/lock_manager/migrations/0001_initial.py
+++ b/mayan/apps/lock_manager/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/lock_manager/migrations/0002_auto_20150604_2219.py b/mayan/apps/lock_manager/migrations/0002_auto_20150604_2219.py
index cf7f62a64b..d0be8deab5 100644
--- a/mayan/apps/lock_manager/migrations/0002_auto_20150604_2219.py
+++ b/mayan/apps/lock_manager/migrations/0002_auto_20150604_2219.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/mailer/migrations/0001_initial.py b/mayan/apps/mailer/migrations/0001_initial.py
index b3bf2ee4f5..817a29d84e 100644
--- a/mayan/apps/mailer/migrations/0001_initial.py
+++ b/mayan/apps/mailer/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/mailer/migrations/0002_usermailer_usermailerlogentry.py b/mayan/apps/mailer/migrations/0002_usermailer_usermailerlogentry.py
index 6e0904aca9..87f2ec3776 100644
--- a/mayan/apps/mailer/migrations/0002_usermailer_usermailerlogentry.py
+++ b/mayan/apps/mailer/migrations/0002_usermailer_usermailerlogentry.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-02 08:12
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/mailer/migrations/0003_auto_20170703_1535.py b/mayan/apps/mailer/migrations/0003_auto_20170703_1535.py
index 454b20131f..1df98beed8 100644
--- a/mayan/apps/mailer/migrations/0003_auto_20170703_1535.py
+++ b/mayan/apps/mailer/migrations/0003_auto_20170703_1535.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-03 15:35
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/mailer/migrations/0004_auto_20170714_2133.py b/mayan/apps/mailer/migrations/0004_auto_20170714_2133.py
index c551861ad5..b6a00fd50b 100644
--- a/mayan/apps/mailer/migrations/0004_auto_20170714_2133.py
+++ b/mayan/apps/mailer/migrations/0004_auto_20170714_2133.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-14 21:33
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,10 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='usermailer',
             name='default',
-            field=models.BooleanField(default=True, help_text='If default, this mailing profile will be pre-selected on the document mailing form.', verbose_name='Default'),
+            field=models.BooleanField(
+                default=True, help_text='If default, this mailing profile '
+                'will be pre-selected on the document mailing form.',
+                verbose_name='Default'
+            ),
         ),
     ]
diff --git a/mayan/apps/mailer/migrations/0005_auto_20170718_0123.py b/mayan/apps/mailer/migrations/0005_auto_20170718_0123.py
index 353a2876b6..cf7813b2cd 100644
--- a/mayan/apps/mailer/migrations/0005_auto_20170718_0123.py
+++ b/mayan/apps/mailer/migrations/0005_auto_20170718_0123.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-18 01:23
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,8 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='usermailer',
             name='label',
-            field=models.CharField(max_length=128, unique=True, verbose_name='Label'),
+            field=models.CharField(
+                max_length=128, unique=True, verbose_name='Label'
+            ),
         ),
     ]
diff --git a/mayan/apps/mailer/tests/test_views.py b/mayan/apps/mailer/tests/test_views.py
index 4058c566aa..5b86cb6888 100644
--- a/mayan/apps/mailer/tests/test_views.py
+++ b/mayan/apps/mailer/tests/test_views.py
@@ -22,7 +22,6 @@ from .mailers import TestBackend
 from .mixins import MailerTestMixin, MailerViewTestMixin
 
 
-
 class MailerViewsTestCase(MailerTestMixin, MailerViewTestMixin, GenericViewTestCase):
     def test_user_mailer_create_view_no_permissions(self):
         self.grant_permission(permission=permission_user_mailer_view)
diff --git a/mayan/apps/mayan_statistics/classes.py b/mayan/apps/mayan_statistics/classes.py
index 162dcfa8e8..e4296d095f 100644
--- a/mayan/apps/mayan_statistics/classes.py
+++ b/mayan/apps/mayan_statistics/classes.py
@@ -131,7 +131,7 @@ class Statistic(object):
         return force_text(self.label)
 
     def execute(self):
-        results=self.func()
+        results = self.func()
         # Force evaluation of results to be able to store it serialized
         # Needed for Python 3
         # PY3
diff --git a/mayan/apps/mayan_statistics/migrations/0001_initial.py b/mayan/apps/mayan_statistics/migrations/0001_initial.py
index 53a45acf84..41c3f799b9 100644
--- a/mayan/apps/mayan_statistics/migrations/0001_initial.py
+++ b/mayan/apps/mayan_statistics/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/mayan_statistics/views.py b/mayan/apps/mayan_statistics/views.py
index b99ca2430f..5b78368940 100644
--- a/mayan/apps/mayan_statistics/views.py
+++ b/mayan/apps/mayan_statistics/views.py
@@ -2,7 +2,6 @@ from __future__ import unicode_literals
 
 from django.contrib import messages
 from django.http import Http404
-from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 
 from mayan.apps.common.generics import ConfirmView, SimpleView, SingleObjectListView
diff --git a/mayan/apps/metadata/migrations/0001_initial.py b/mayan/apps/metadata/migrations/0001_initial.py
index 01ab7a68cf..91e415b3ea 100644
--- a/mayan/apps/metadata/migrations/0001_initial.py
+++ b/mayan/apps/metadata/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/metadata/migrations/0002_auto_20150708_0118.py b/mayan/apps/metadata/migrations/0002_auto_20150708_0118.py
index 6583f24321..c08c928d07 100644
--- a/mayan/apps/metadata/migrations/0002_auto_20150708_0118.py
+++ b/mayan/apps/metadata/migrations/0002_auto_20150708_0118.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/metadata/migrations/0003_auto_20150708_0323.py b/mayan/apps/metadata/migrations/0003_auto_20150708_0323.py
index 856562cf30..d54b56e770 100644
--- a/mayan/apps/metadata/migrations/0003_auto_20150708_0323.py
+++ b/mayan/apps/metadata/migrations/0003_auto_20150708_0323.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/metadata/migrations/0004_auto_20150708_0324.py b/mayan/apps/metadata/migrations/0004_auto_20150708_0324.py
index a514272195..6ff48b572e 100644
--- a/mayan/apps/metadata/migrations/0004_auto_20150708_0324.py
+++ b/mayan/apps/metadata/migrations/0004_auto_20150708_0324.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/metadata/migrations/0005_auto_20150729_2344.py b/mayan/apps/metadata/migrations/0005_auto_20150729_2344.py
index b84cbd6d72..8920218c1c 100644
--- a/mayan/apps/metadata/migrations/0005_auto_20150729_2344.py
+++ b/mayan/apps/metadata/migrations/0005_auto_20150729_2344.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/metadata/migrations/0006_auto_20150820_0616.py b/mayan/apps/metadata/migrations/0006_auto_20150820_0616.py
index 14a608efb7..b0fbf9774c 100644
--- a/mayan/apps/metadata/migrations/0006_auto_20150820_0616.py
+++ b/mayan/apps/metadata/migrations/0006_auto_20150820_0616.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/metadata/migrations/0007_auto_20150918_0800.py b/mayan/apps/metadata/migrations/0007_auto_20150918_0800.py
index c5abfc9641..f76e5008e7 100644
--- a/mayan/apps/metadata/migrations/0007_auto_20150918_0800.py
+++ b/mayan/apps/metadata/migrations/0007_auto_20150918_0800.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/metadata/migrations/0008_auto_20180310_1715.py b/mayan/apps/metadata/migrations/0008_auto_20180310_1715.py
index bd793bfc3e..020ac7755a 100644
--- a/mayan/apps/metadata/migrations/0008_auto_20180310_1715.py
+++ b/mayan/apps/metadata/migrations/0008_auto_20180310_1715.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.10 on 2018-03-10 17:15
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,10 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='documentmetadata',
-            options={'ordering': ('metadata_type',), 'verbose_name': 'Document metadata', 'verbose_name_plural': 'Document metadata'},
+            options={
+                'ordering': ('metadata_type',),
+                'verbose_name': 'Document metadata',
+                'verbose_name_plural': 'Document metadata'
+            },
         ),
     ]
diff --git a/mayan/apps/metadata/migrations/0009_auto_20180402_0339.py b/mayan/apps/metadata/migrations/0009_auto_20180402_0339.py
index 18f5b66edd..d06c8c7291 100644
--- a/mayan/apps/metadata/migrations/0009_auto_20180402_0339.py
+++ b/mayan/apps/metadata/migrations/0009_auto_20180402_0339.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-04-02 03:39
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,10 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='documenttypemetadatatype',
-            options={'ordering': ('metadata_type',), 'verbose_name': 'Document type metadata type options', 'verbose_name_plural': 'Document type metadata types options'},
+            options={
+                'ordering': ('metadata_type',),
+                'verbose_name': 'Document type metadata type options',
+                'verbose_name_plural': 'Document type metadata types options'
+            },
         ),
     ]
diff --git a/mayan/apps/metadata/migrations/0010_auto_20180823_2353.py b/mayan/apps/metadata/migrations/0010_auto_20180823_2353.py
index 79a656025b..3507c2ad9c 100644
--- a/mayan/apps/metadata/migrations/0010_auto_20180823_2353.py
+++ b/mayan/apps/metadata/migrations/0010_auto_20180823_2353.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-23 23:53
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,11 +13,23 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='metadatatype',
             name='default',
-            field=models.CharField(blank=True, help_text="Enter a template to render. Use Django's default templating language (https://docs.djangoproject.com/en/1.11/ref/templates/builtins/)", max_length=128, null=True, verbose_name='Default'),
+            field=models.CharField(
+                blank=True,
+                help_text="Enter a template to render. Use Django's default "
+                "templating language "
+                "(https://docs.djangoproject.com/en/1.11/ref/templates/builtins/)",
+                max_length=128, null=True, verbose_name='Default'
+            ),
         ),
         migrations.AlterField(
             model_name='metadatatype',
             name='lookup',
-            field=models.TextField(blank=True, help_text="Enter a template to render. Must result in a comma delimited string. Use Django's default templating language (https://docs.djangoproject.com/en/1.11/ref/templates/builtins/).", null=True, verbose_name='Lookup'),
+            field=models.TextField(
+                blank=True,
+                help_text="Enter a template to render. Must result in a comma "
+                "delimited string. Use Django's default templating language "
+                "(https://docs.djangoproject.com/en/1.11/ref/templates/builtins/).",
+                null=True, verbose_name='Lookup'
+            ),
         ),
     ]
diff --git a/mayan/apps/metadata/migrations/0011_auto_20180917_0645.py b/mayan/apps/metadata/migrations/0011_auto_20180917_0645.py
index 6a0593a2d9..7867972b8a 100644
--- a/mayan/apps/metadata/migrations/0011_auto_20180917_0645.py
+++ b/mayan/apps/metadata/migrations/0011_auto_20180917_0645.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 06:45
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,11 +13,20 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentmetadata',
             name='value',
-            field=models.CharField(blank=True, db_index=True, help_text='The actual value stored in the metadata type field for the document.', max_length=255, null=True, verbose_name='Value'),
+            field=models.CharField(
+                blank=True, db_index=True,
+                help_text='The actual value stored in the metadata type '
+                'field for the document.', max_length=255, null=True,
+                verbose_name='Value'
+            ),
         ),
         migrations.AlterField(
             model_name='metadatatype',
             name='name',
-            field=models.CharField(help_text='Name used by other apps to reference this metadata type. Do not use python reserved words, or spaces.', max_length=48, unique=True, verbose_name='Name'),
+            field=models.CharField(
+                help_text='Name used by other apps to reference this '
+                'metadata type. Do not use python reserved words, or spaces.',
+                max_length=48, unique=True, verbose_name='Name'
+            ),
         ),
     ]
diff --git a/mayan/apps/motd/migrations/0001_initial.py b/mayan/apps/motd/migrations/0001_initial.py
index d3dbfdea99..3e688c0743 100644
--- a/mayan/apps/motd/migrations/0001_initial.py
+++ b/mayan/apps/motd/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/motd/migrations/0002_auto_20160313_0340.py b/mayan/apps/motd/migrations/0002_auto_20160313_0340.py
index f5dd5098c6..a37b376338 100644
--- a/mayan/apps/motd/migrations/0002_auto_20160313_0340.py
+++ b/mayan/apps/motd/migrations/0002_auto_20160313_0340.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/motd/migrations/0003_auto_20160313_0349.py b/mayan/apps/motd/migrations/0003_auto_20160313_0349.py
index 24e610c760..9c8712955a 100644
--- a/mayan/apps/motd/migrations/0003_auto_20160313_0349.py
+++ b/mayan/apps/motd/migrations/0003_auto_20160313_0349.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/motd/migrations/0004_auto_20160314_0040.py b/mayan/apps/motd/migrations/0004_auto_20160314_0040.py
index ac9158c471..ee0b9f0ac9 100644
--- a/mayan/apps/motd/migrations/0004_auto_20160314_0040.py
+++ b/mayan/apps/motd/migrations/0004_auto_20160314_0040.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/motd/migrations/0005_auto_20160510_0025.py b/mayan/apps/motd/migrations/0005_auto_20160510_0025.py
index cce5048849..fc529a5c77 100644
--- a/mayan/apps/motd/migrations/0005_auto_20160510_0025.py
+++ b/mayan/apps/motd/migrations/0005_auto_20160510_0025.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/navigation/classes.py b/mayan/apps/navigation/classes.py
index 0fc22c625b..1cc9b1c3af 100644
--- a/mayan/apps/navigation/classes.py
+++ b/mayan/apps/navigation/classes.py
@@ -87,7 +87,6 @@ class Link(object):
         if name:
             self.__class__._registry[name] = self
 
-
     def resolve(self, context=None, request=None, resolved_object=None):
         if not context and not request:
             raise ImproperlyConfigured(
diff --git a/mayan/apps/ocr/migrations/0001_initial.py b/mayan/apps/ocr/migrations/0001_initial.py
index 28d5add883..3270eeaf01 100644
--- a/mayan/apps/ocr/migrations/0001_initial.py
+++ b/mayan/apps/ocr/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/ocr/migrations/0002_documentpagecontent.py b/mayan/apps/ocr/migrations/0002_documentpagecontent.py
index a729447f22..df4587f2b9 100644
--- a/mayan/apps/ocr/migrations/0002_documentpagecontent.py
+++ b/mayan/apps/ocr/migrations/0002_documentpagecontent.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/ocr/migrations/0003_auto_20150617_0401.py b/mayan/apps/ocr/migrations/0003_auto_20150617_0401.py
index 4fc8a85c34..de59a975bb 100644
--- a/mayan/apps/ocr/migrations/0003_auto_20150617_0401.py
+++ b/mayan/apps/ocr/migrations/0003_auto_20150617_0401.py
@@ -1,12 +1,15 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
 
 
-def move_content_from_documents_to_ocr_app(apps, schema_editor):
-    DocumentPage = apps.get_model('documents', 'DocumentPage')
-    DocumentPageContent = apps.get_model('ocr', 'DocumentPageContent')
+def operation_move_content_from_documents_to_ocr_app(apps, schema_editor):
+    DocumentPage = apps.get_model(
+        app_label='documents', model_name='DocumentPage'
+    )
+    DocumentPageContent = apps.get_model(
+        app_label='ocr', model_name='DocumentPageContent'
+    )
 
     for document_page in DocumentPage.objects.using(schema_editor.connection.alias).all():
         DocumentPageContent.objects.using(schema_editor.connection.alias).create(
@@ -22,5 +25,7 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(move_content_from_documents_to_ocr_app),
+        migrations.RunPython(
+            code=operation_move_content_from_documents_to_ocr_app
+        ),
     ]
diff --git a/mayan/apps/ocr/migrations/0004_documenttypesettings.py b/mayan/apps/ocr/migrations/0004_documenttypesettings.py
index f0593988b7..7597c24074 100644
--- a/mayan/apps/ocr/migrations/0004_documenttypesettings.py
+++ b/mayan/apps/ocr/migrations/0004_documenttypesettings.py
@@ -1,12 +1,15 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
 
 
-def create_ocr_setting_for_existing_document_types(apps, schema_editor):
-    DocumentType = apps.get_model('documents', 'DocumentType')
-    DocumentTypeSettings = apps.get_model('ocr', 'DocumentTypeSettings')
+def operation_create_ocr_setting_for_existing_document_types(apps, schema_editor):
+    DocumentType = apps.get_model(
+        app_label='documents', model_name='DocumentType'
+    )
+    DocumentTypeSettings = apps.get_model(
+        app_label='ocr', model_name='DocumentTypeSettings'
+    )
 
     for document_type in DocumentType.objects.using(schema_editor.connection.alias).all():
         try:
@@ -55,5 +58,7 @@ class Migration(migrations.Migration):
             },
             bases=(models.Model,),
         ),
-        migrations.RunPython(create_ocr_setting_for_existing_document_types),
+        migrations.RunPython(
+            code=operation_create_ocr_setting_for_existing_document_types
+        ),
     ]
diff --git a/mayan/apps/ocr/migrations/0005_auto_20170630_1846.py b/mayan/apps/ocr/migrations/0005_auto_20170630_1846.py
index b0d6c41c08..38b928b035 100644
--- a/mayan/apps/ocr/migrations/0005_auto_20170630_1846.py
+++ b/mayan/apps/ocr/migrations/0005_auto_20170630_1846.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-06-30 18:46
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/ocr/migrations/0006_auto_20170823_0553.py b/mayan/apps/ocr/migrations/0006_auto_20170823_0553.py
index 19966f4448..6d72ba796e 100644
--- a/mayan/apps/ocr/migrations/0006_auto_20170823_0553.py
+++ b/mayan/apps/ocr/migrations/0006_auto_20170823_0553.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-23 05:53
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/ocr/migrations/0007_auto_20170827_1617.py b/mayan/apps/ocr/migrations/0007_auto_20170827_1617.py
index 9ddb948fbb..96d30ae946 100644
--- a/mayan/apps/ocr/migrations/0007_auto_20170827_1617.py
+++ b/mayan/apps/ocr/migrations/0007_auto_20170827_1617.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-27 16:17
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/ocr/migrations/0008_auto_20180917_0646.py b/mayan/apps/ocr/migrations/0008_auto_20180917_0646.py
index cb024d41ac..7f995f13bf 100644
--- a/mayan/apps/ocr/migrations/0008_auto_20180917_0646.py
+++ b/mayan/apps/ocr/migrations/0008_auto_20180917_0646.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 06:46
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentpageocrcontent',
             name='content',
-            field=models.TextField(blank=True, help_text='The actual text content extracted by the OCR backend.', verbose_name='Content'),
+            field=models.TextField(
+                blank=True, help_text='The actual text content extracted by '
+                'the OCR backend.', verbose_name='Content'
+            ),
         ),
     ]
diff --git a/mayan/apps/permissions/migrations/0001_initial.py b/mayan/apps/permissions/migrations/0001_initial.py
index f9ebb57358..81ef02a769 100644
--- a/mayan/apps/permissions/migrations/0001_initial.py
+++ b/mayan/apps/permissions/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/permissions/migrations/0002_auto_20150628_0533.py b/mayan/apps/permissions/migrations/0002_auto_20150628_0533.py
index 8a295a6530..e2cb7b517b 100644
--- a/mayan/apps/permissions/migrations/0002_auto_20150628_0533.py
+++ b/mayan/apps/permissions/migrations/0002_auto_20150628_0533.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/permissions/migrations/0003_remove_role_name.py b/mayan/apps/permissions/migrations/0003_remove_role_name.py
index cc4c670be5..f86fe99fb0 100644
--- a/mayan/apps/permissions/migrations/0003_remove_role_name.py
+++ b/mayan/apps/permissions/migrations/0003_remove_role_name.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/platform/classes.py b/mayan/apps/platform/classes.py
index edc865272b..384dfa2fb9 100644
--- a/mayan/apps/platform/classes.py
+++ b/mayan/apps/platform/classes.py
@@ -12,6 +12,9 @@ from django.template import loader
 from django.utils.encoding import force_text, python_2_unicode_compatible
 from django.utils.translation import ugettext_lazy as _
 
+from mayan.apps.common.settings import (
+    setting_celery_broker_url, setting_celery_result_backend
+)
 from mayan.apps.task_manager.classes import Worker
 
 
@@ -102,10 +105,6 @@ class PlatformTemplate(object):
         )
 
 
-from mayan.apps.common.settings import (
-    setting_celery_broker_url, setting_celery_result_backend
-)
-
 class PlatformTemplateSupervisord(PlatformTemplate):
     context_defaults = {
         'BROKER_URL': 'redis://127.0.0.1:6379/0',
diff --git a/mayan/apps/sources/migrations/0001_initial.py b/mayan/apps/sources/migrations/0001_initial.py
index b49e1c6fae..4375d31b31 100644
--- a/mayan/apps/sources/migrations/0001_initial.py
+++ b/mayan/apps/sources/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/sources/migrations/0002_auto_20150608_1902.py b/mayan/apps/sources/migrations/0002_auto_20150608_1902.py
index 1ee366c90f..064f628b3e 100644
--- a/mayan/apps/sources/migrations/0002_auto_20150608_1902.py
+++ b/mayan/apps/sources/migrations/0002_auto_20150608_1902.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/sources/migrations/0003_sourcelog.py b/mayan/apps/sources/migrations/0003_sourcelog.py
index deee3eee6e..b5502a4540 100644
--- a/mayan/apps/sources/migrations/0003_sourcelog.py
+++ b/mayan/apps/sources/migrations/0003_sourcelog.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/sources/migrations/0004_auto_20150616_1931.py b/mayan/apps/sources/migrations/0004_auto_20150616_1931.py
index 7c36cdc2e9..f3bbba8169 100644
--- a/mayan/apps/sources/migrations/0004_auto_20150616_1931.py
+++ b/mayan/apps/sources/migrations/0004_auto_20150616_1931.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/sources/migrations/0005_auto_20150708_0327.py b/mayan/apps/sources/migrations/0005_auto_20150708_0327.py
index 857918bf24..a5c0b7f99b 100644
--- a/mayan/apps/sources/migrations/0005_auto_20150708_0327.py
+++ b/mayan/apps/sources/migrations/0005_auto_20150708_0327.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/sources/migrations/0006_auto_20150708_0330.py b/mayan/apps/sources/migrations/0006_auto_20150708_0330.py
index 704f476497..c3260e33b5 100644
--- a/mayan/apps/sources/migrations/0006_auto_20150708_0330.py
+++ b/mayan/apps/sources/migrations/0006_auto_20150708_0330.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/sources/migrations/0007_emailbasemodel_metadata_attachment_name.py b/mayan/apps/sources/migrations/0007_emailbasemodel_metadata_attachment_name.py
index 304a1d7dde..3a64d6be0e 100644
--- a/mayan/apps/sources/migrations/0007_emailbasemodel_metadata_attachment_name.py
+++ b/mayan/apps/sources/migrations/0007_emailbasemodel_metadata_attachment_name.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/sources/migrations/0008_auto_20150815_0351.py b/mayan/apps/sources/migrations/0008_auto_20150815_0351.py
index e3871e4a5b..76295a099f 100644
--- a/mayan/apps/sources/migrations/0008_auto_20150815_0351.py
+++ b/mayan/apps/sources/migrations/0008_auto_20150815_0351.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/sources/migrations/0009_auto_20150930_2341.py b/mayan/apps/sources/migrations/0009_auto_20150930_2341.py
index 7dbfcd46da..8726977d5d 100644
--- a/mayan/apps/sources/migrations/0009_auto_20150930_2341.py
+++ b/mayan/apps/sources/migrations/0009_auto_20150930_2341.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
@@ -15,13 +14,25 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='emailbasemodel',
             name='from_metadata_type',
-            field=models.ForeignKey(related_name='email_from', blank=True, to='metadata.MetadataType', help_text='Select a metadata type valid for the document type selected in which to store the email\'s "from" value.', null=True, verbose_name='From metadata type'),
+            field=models.ForeignKey(
+                related_name='email_from', blank=True,
+                to='metadata.MetadataType',
+                help_text='Select a metadata type valid for the document '
+                'type selected in which to store the email\'s "from" value.',
+                null=True, verbose_name='From metadata type'
+            ),
             preserve_default=True,
         ),
         migrations.AddField(
             model_name='emailbasemodel',
             name='subject_metadata_type',
-            field=models.ForeignKey(related_name='email_subject', blank=True, to='metadata.MetadataType', help_text="Select a metadata type valid for the document type selected in which to store the email's subject.", null=True, verbose_name='Subject metadata type'),
+            field=models.ForeignKey(
+                related_name='email_subject', blank=True,
+                to='metadata.MetadataType', help_text="Select a metadata "
+                "type valid for the document type selected in which to store "
+                "the email's subject.", null=True,
+                verbose_name='Subject metadata type'
+            ),
             preserve_default=True,
         ),
     ]
diff --git a/mayan/apps/sources/migrations/0010_auto_20151001_0055.py b/mayan/apps/sources/migrations/0010_auto_20151001_0055.py
index 33262efccb..b3b68a71c5 100644
--- a/mayan/apps/sources/migrations/0010_auto_20151001_0055.py
+++ b/mayan/apps/sources/migrations/0010_auto_20151001_0055.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
@@ -14,13 +13,21 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='emailbasemodel',
             name='store_body',
-            field=models.BooleanField(default=True, help_text='Store the body of the email as a text document.', verbose_name='Store email body'),
+            field=models.BooleanField(
+                default=True,
+                help_text='Store the body of the email as a text document.',
+                verbose_name='Store email body'
+            ),
             preserve_default=True,
         ),
         migrations.AlterField(
             model_name='imapemail',
             name='mailbox',
-            field=models.CharField(default='INBOX', help_text='IMAP Mailbox from which to check for messages.', max_length=64, verbose_name='Mailbox'),
+            field=models.CharField(
+                default='INBOX',
+                help_text='IMAP Mailbox from which to check for messages.',
+                max_length=64, verbose_name='Mailbox'
+            ),
             preserve_default=True,
         ),
     ]
diff --git a/mayan/apps/sources/migrations/0011_sanescanner.py b/mayan/apps/sources/migrations/0011_sanescanner.py
index b6fc57e5db..e30245b9f5 100644
--- a/mayan/apps/sources/migrations/0011_sanescanner.py
+++ b/mayan/apps/sources/migrations/0011_sanescanner.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-02-05 04:19
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/sources/migrations/0012_auto_20170205_0743.py b/mayan/apps/sources/migrations/0012_auto_20170205_0743.py
index bf4f066e3a..6a9cce7a5a 100644
--- a/mayan/apps/sources/migrations/0012_auto_20170205_0743.py
+++ b/mayan/apps/sources/migrations/0012_auto_20170205_0743.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-02-05 07:43
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -26,7 +24,9 @@ class Migration(migrations.Migration):
             model_name='sanescanner',
             name='resolution',
             field=models.PositiveIntegerField(
-                default=300, help_text='Sets the resolution of the scanned image in DPI (dots per inch).',
+                default=300,
+                help_text='Sets the resolution of the scanned image in '
+                'DPI (dots per inch).',
                 verbose_name='Resolution'
             ),
         ),
diff --git a/mayan/apps/sources/migrations/0013_auto_20170206_0710.py b/mayan/apps/sources/migrations/0013_auto_20170206_0710.py
index bed9fab82e..e76757ab29 100644
--- a/mayan/apps/sources/migrations/0013_auto_20170206_0710.py
+++ b/mayan/apps/sources/migrations/0013_auto_20170206_0710.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-02-06 07:10
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/sources/migrations/0014_auto_20170206_0722.py b/mayan/apps/sources/migrations/0014_auto_20170206_0722.py
index 9fb655901d..db916bf4df 100644
--- a/mayan/apps/sources/migrations/0014_auto_20170206_0722.py
+++ b/mayan/apps/sources/migrations/0014_auto_20170206_0722.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-02-06 07:22
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/sources/migrations/0015_auto_20170206_0835.py b/mayan/apps/sources/migrations/0015_auto_20170206_0835.py
index 375579641a..d80910a2b9 100644
--- a/mayan/apps/sources/migrations/0015_auto_20170206_0835.py
+++ b/mayan/apps/sources/migrations/0015_auto_20170206_0835.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-02-06 08:35
 from __future__ import unicode_literals
 
 from django.db import migrations, models
diff --git a/mayan/apps/sources/migrations/0016_auto_20170630_2040.py b/mayan/apps/sources/migrations/0016_auto_20170630_2040.py
index 24e6f6e31b..1384de2403 100644
--- a/mayan/apps/sources/migrations/0016_auto_20170630_2040.py
+++ b/mayan/apps/sources/migrations/0016_auto_20170630_2040.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-06-30 20:40
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,12 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='sanescanner',
             name='resolution',
-            field=models.PositiveIntegerField(blank=True, help_text='Sets the resolution of the scanned image in DPI (dots per inch). Typical value is 200. If this option is not supported by your scanner, leave it blank.', null=True, verbose_name='Resolution'),
+            field=models.PositiveIntegerField(
+                blank=True,
+                help_text='Sets the resolution of the scanned image in '
+                'DPI (dots per inch). Typical value is 200. If this option '
+                'is not supported by your scanner, leave it blank.',
+                null=True, verbose_name='Resolution'
+            ),
         ),
     ]
diff --git a/mayan/apps/sources/migrations/0017_auto_20180510_2151.py b/mayan/apps/sources/migrations/0017_auto_20180510_2151.py
index 030126296c..dcb5ea317b 100644
--- a/mayan/apps/sources/migrations/0017_auto_20180510_2151.py
+++ b/mayan/apps/sources/migrations/0017_auto_20180510_2151.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-05-10 21:51
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,15 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='sanescanner',
             name='source',
-            field=models.CharField(blank=True, choices=[('flatbed', 'Flatbed'), ('Automatic Document Feeder', 'Document feeder')], help_text='Selects the scan source (such as a document-feeder). If this option is not supported by your scanner, leave it blank.', max_length=32, null=True, verbose_name='Paper source'),
+            field=models.CharField(
+                blank=True, choices=[
+                    ('flatbed', 'Flatbed'),
+                    ('Automatic Document Feeder', 'Document feeder')
+                ],
+                help_text='Selects the scan source (such as a '
+                'document-feeder). If this option is not supported by your '
+                'scanner, leave it blank.', max_length=32, null=True,
+                verbose_name='Paper source'
+            ),
         ),
     ]
diff --git a/mayan/apps/sources/migrations/0018_auto_20180608_0057.py b/mayan/apps/sources/migrations/0018_auto_20180608_0057.py
index a0f50f920c..e3dad64fce 100644
--- a/mayan/apps/sources/migrations/0018_auto_20180608_0057.py
+++ b/mayan/apps/sources/migrations/0018_auto_20180608_0057.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-06-08 00:57
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,13 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='sanescanner',
             name='adf_mode',
-            field=models.CharField(blank=True, choices=[('simplex', 'Simplex'), ('duplex', 'Duplex')], help_text='Selects the document feeder mode (simplex/duplex). If this option is not supported by your scanner, leave it blank.', max_length=16, verbose_name='ADF mode'),
+            field=models.CharField(
+                blank=True, choices=[
+                    ('simplex', 'Simplex'), ('duplex', 'Duplex')
+                ],
+                help_text='Selects the document feeder mode (simplex/duplex). '
+                'If this option is not supported by your scanner, leave it '
+                'blank.', max_length=16, verbose_name='ADF mode'
+            ),
         ),
     ]
diff --git a/mayan/apps/sources/migrations/0019_auto_20180803_0440.py b/mayan/apps/sources/migrations/0019_auto_20180803_0440.py
index fdfb39b667..cf92cb6728 100644
--- a/mayan/apps/sources/migrations/0019_auto_20180803_0440.py
+++ b/mayan/apps/sources/migrations/0019_auto_20180803_0440.py
@@ -1,16 +1,16 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-03 04:40
 from __future__ import unicode_literals
 
 from django.db import migrations, models
 
 
-def make_labels_unique(apps, schema_editor):
-    Source = apps.get_model('sources', 'Source')
+def operation_make_labels_unique(apps, schema_editor):
+    Source = apps.get_model(app_label='sources', model_name='Source')
 
     for source in Source.objects.using(schema_editor.connection.alias).all():
         # Look for sources with the same label
-        duplicate_queryset = Source.objects.using(schema_editor.connection.alias).filter(label=source.label).exclude(pk=source.pk)
+        duplicate_queryset = Source.objects.using(
+            schema_editor.connection.alias
+        ).filter(label=source.label).exclude(pk=source.pk)
         if duplicate_queryset:
             # If a duplicate is found, append the id to the original source
             # label
@@ -18,8 +18,8 @@ def make_labels_unique(apps, schema_editor):
             source.save()
 
 
-def make_labels_unique_reverse(apps, schema_editor):
-    Source = apps.get_model('sources', 'Source')
+def operation_make_labels_unique_reverse(apps, schema_editor):
+    Source = apps.get_model(app_label='sources', model_name='Source')
 
     for source in Source.objects.using(schema_editor.connection.alias).all():
         if source.label.endswith('__{}'.format(source.pk)):
@@ -35,11 +35,14 @@ class Migration(migrations.Migration):
 
     operations = [
         migrations.RunPython(
-            make_labels_unique, reverse_code=make_labels_unique_reverse
+            code=operation_make_labels_unique,
+            reverse_code=operation_make_labels_unique_reverse
         ),
         migrations.AlterField(
             model_name='source',
             name='label',
-            field=models.CharField(db_index=True, max_length=64, unique=True, verbose_name='Label'),
+            field=models.CharField(
+                db_index=True, max_length=64, unique=True, verbose_name='Label'
+            ),
         ),
     ]
diff --git a/mayan/apps/sources/migrations/0020_auto_20181128_0752.py b/mayan/apps/sources/migrations/0020_auto_20181128_0752.py
index 49ecd7bbbf..7d3b4c7ed8 100644
--- a/mayan/apps/sources/migrations/0020_auto_20181128_0752.py
+++ b/mayan/apps/sources/migrations/0020_auto_20181128_0752.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.16 on 2018-11-28 07:52
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,12 +13,19 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='watchfoldersource',
             name='include_subdirectories',
-            field=models.BooleanField(default=False, help_text='If checked, not only will the folder path be scanned for files but also its subdirectories.', verbose_name='Include subdirectories?'),
+            field=models.BooleanField(
+                default=False, help_text='If checked, not only will the '
+                'folder path be scanned for files but also its '
+                'subdirectories.', verbose_name='Include subdirectories?'
+            ),
             preserve_default=False,
         ),
         migrations.AlterField(
             model_name='watchfoldersource',
             name='folder_path',
-            field=models.CharField(help_text='Server side filesystem path to scan for files.', max_length=255, verbose_name='Folder path'),
+            field=models.CharField(
+                help_text='Server side filesystem path to scan for files.',
+                max_length=255, verbose_name='Folder path'
+            ),
         ),
     ]
diff --git a/mayan/apps/tags/migrations/0001_initial.py b/mayan/apps/tags/migrations/0001_initial.py
index b6d9e8e2f1..dc30d42819 100644
--- a/mayan/apps/tags/migrations/0001_initial.py
+++ b/mayan/apps/tags/migrations/0001_initial.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
diff --git a/mayan/apps/tags/migrations/0002_tag_selection.py b/mayan/apps/tags/migrations/0002_tag_selection.py
index 126e5bc239..fe5cb62bd6 100644
--- a/mayan/apps/tags/migrations/0002_tag_selection.py
+++ b/mayan/apps/tags/migrations/0002_tag_selection.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -31,8 +30,8 @@ RGB_VALUES = {
 }
 
 
-def convert_color_names_to_rgb(apps, schema_editor):
-    Tag = apps.get_model('tags', 'Tag')
+def operation_convert_color_names_to_rgb(apps, schema_editor):
+    Tag = apps.get_model(app_label='tags', model_name='Tag')
 
     for tag in Tag.objects.using(schema_editor.connection.alias).all():
         tag.selection = RGB_VALUES[tag.color]
@@ -52,5 +51,5 @@ class Migration(migrations.Migration):
             field=colorful.fields.RGBColorField(default='#FFFFFF'),
             preserve_default=False,
         ),
-        migrations.RunPython(convert_color_names_to_rgb),
+        migrations.RunPython(code=operation_convert_color_names_to_rgb),
     ]
diff --git a/mayan/apps/tags/migrations/0003_remove_tag_color.py b/mayan/apps/tags/migrations/0003_remove_tag_color.py
index bcd52569fe..d6e0a71533 100644
--- a/mayan/apps/tags/migrations/0003_remove_tag_color.py
+++ b/mayan/apps/tags/migrations/0003_remove_tag_color.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/tags/migrations/0004_auto_20150717_2336.py b/mayan/apps/tags/migrations/0004_auto_20150717_2336.py
index 8ac24d9610..bcaa61ea3e 100644
--- a/mayan/apps/tags/migrations/0004_auto_20150717_2336.py
+++ b/mayan/apps/tags/migrations/0004_auto_20150717_2336.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/tags/migrations/0005_auto_20150718_0616.py b/mayan/apps/tags/migrations/0005_auto_20150718_0616.py
index c1a3eee6ab..1007868855 100644
--- a/mayan/apps/tags/migrations/0005_auto_20150718_0616.py
+++ b/mayan/apps/tags/migrations/0005_auto_20150718_0616.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/tags/migrations/0006_documenttag.py b/mayan/apps/tags/migrations/0006_documenttag.py
index bd1094dff5..0bb558ec61 100644
--- a/mayan/apps/tags/migrations/0006_documenttag.py
+++ b/mayan/apps/tags/migrations/0006_documenttag.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations
diff --git a/mayan/apps/tags/migrations/0007_auto_20170118_1758.py b/mayan/apps/tags/migrations/0007_auto_20170118_1758.py
index cb71a36494..7803b9a82d 100644
--- a/mayan/apps/tags/migrations/0007_auto_20170118_1758.py
+++ b/mayan/apps/tags/migrations/0007_auto_20170118_1758.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.5 on 2017-01-18 17:58
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,9 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='tag',
-            options={'ordering': ('label',), 'verbose_name': 'Tag', 'verbose_name_plural': 'Tags'},
+            options={
+                'ordering': ('label',), 'verbose_name': 'Tag',
+                'verbose_name_plural': 'Tags'
+            },
         ),
     ]
diff --git a/mayan/apps/tags/migrations/0008_auto_20180917_0646.py b/mayan/apps/tags/migrations/0008_auto_20180917_0646.py
index 7a1349c1d0..eb3028a231 100644
--- a/mayan/apps/tags/migrations/0008_auto_20180917_0646.py
+++ b/mayan/apps/tags/migrations/0008_auto_20180917_0646.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 06:46
 from __future__ import unicode_literals
 
 import colorful.fields
@@ -16,11 +14,17 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='tag',
             name='color',
-            field=colorful.fields.RGBColorField(help_text='The RGB color values for the tag.', verbose_name='Color'),
+            field=colorful.fields.RGBColorField(
+                help_text='The RGB color values for the tag.',
+                verbose_name='Color'
+            ),
         ),
         migrations.AlterField(
             model_name='tag',
             name='label',
-            field=models.CharField(db_index=True, help_text='A short text used as the tag name.', max_length=128, unique=True, verbose_name='Label'),
+            field=models.CharField(
+                db_index=True, help_text='A short text used as the tag name.',
+                max_length=128, unique=True, verbose_name='Label'
+            ),
         ),
     ]
diff --git a/mayan/apps/user_management/migrations/0001_initial.py b/mayan/apps/user_management/migrations/0001_initial.py
index 550c7af189..468d8ecd2f 100644
--- a/mayan/apps/user_management/migrations/0001_initial.py
+++ b/mayan/apps/user_management/migrations/0001_initial.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-26 10:01
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -7,7 +5,7 @@ from django.db import migrations, models
 import django.db.models.deletion
 
 
-def add_user_options_to_existing_users(apps, schema_editor):
+def operation_add_user_options_to_existing_users(apps, schema_editor):
     User = apps.get_model(settings.AUTH_USER_MODEL)
     UserOptions = apps.get_model(
         app_label='user_management', model_name='UserOptions'
@@ -19,7 +17,7 @@ def add_user_options_to_existing_users(apps, schema_editor):
         ).create(user=user)
 
 
-def remove_user_options_from_existing_users(apps, schema_editor):
+def operation_remove_user_options_from_existing_users(apps, schema_editor):
     User = apps.get_model(settings.AUTH_USER_MODEL)
     UserOptions = apps.get_model(
         app_label='user_management', model_name='UserOptions'
@@ -32,7 +30,6 @@ def remove_user_options_from_existing_users(apps, schema_editor):
 
 
 class Migration(migrations.Migration):
-
     initial = True
 
     dependencies = [
@@ -43,9 +40,26 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='UserOptions',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('block_password_change', models.BooleanField(default=False, verbose_name='Forbid this user from changing their password.')),
-                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='user_options', to=settings.AUTH_USER_MODEL, verbose_name='User')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
+                (
+                    'block_password_change', models.BooleanField(
+                        default=False,
+                        verbose_name='Forbid this user from changing their '
+                        'password.'
+                    )
+                ),
+                (
+                    'user', models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name='user_options',
+                        to=settings.AUTH_USER_MODEL, verbose_name='User'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'User settings',
@@ -53,7 +67,7 @@ class Migration(migrations.Migration):
             },
         ),
         migrations.RunPython(
-            code=add_user_options_to_existing_users,
-            reverse_code=remove_user_options_from_existing_users
+            code=operation_add_user_options_to_existing_users,
+            reverse_code=operation_remove_user_options_from_existing_users
         ),
     ]