Switch to full app paths

Instead of inserting the path of the apps into the Python app,
the apps are now referenced by their full import path.

This solves name clashes with external or native Python libraries.
Example: Mayan statistics app vs. Python new statistics library.

Every app reference is now prepended with 'mayan.apps'.

Existing config.yml files need to be updated manually.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/document_parsing/apps.py

@@ -10,18 +10,18 @@ from django.db.models.signals import post_save
 from django.utils.timezone import now
 from django.utils.translation import ugettext_lazy as _
 
-from acls import ModelPermission
-from common import (
+from mayan.apps.acls import ModelPermission
+from mayan.apps.common import (
     MayanAppConfig, menu_facet, menu_multi_item, menu_object, menu_secondary,
     menu_tools
 )
-from common.classes import ModelField
-from common.settings import settings_db_sync_task_delay
-from documents.search import document_search, document_page_search
-from documents.signals import post_version_upload
-from documents.widgets import document_link
+from mayan.apps.common.classes import ModelField
+from mayan.apps.common.settings import settings_db_sync_task_delay
+from mayan.apps.documents.search import document_search, document_page_search
+from mayan.apps.documents.signals import post_version_upload
+from mayan.apps.documents.widgets import document_link
+from mayan.apps.navigation import SourceColumn
 from mayan.celery import app
-from navigation import SourceColumn
 
 from .events import event_parsing_document_version_submit
 from .handlers import (
@@ -66,9 +66,11 @@ def document_version_parsing_submit(self):
 
 
 class DocumentParsingApp(MayanAppConfig):
+    app_namespace = 'document_parsing'
+    app_url = 'parsing'
     has_rest_api = True
     has_tests = True
-    name = 'document_parsing'
+    name = 'mayan.apps.document_parsing'
     verbose_name = _('Document parsing')
 
     def ready(self):
@@ -141,7 +143,7 @@ class DocumentParsingApp(MayanAppConfig):
 
         app.conf.CELERY_ROUTES.update(
             {
-                'document_parsing.tasks.task_parse_document_version': {
+                'mayan.apps.document_parsing.tasks.task_parse_document_version': {
                     'queue': 'parsing'
                 },
             }