Add missing converter app migration, adding the lineart transformation.

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

mayan/apps/converter/migrations/0012_auto_20170714_2133.py

@@ -0,0 +1,20 @@
+# -*- 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
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('converter', '0011_auto_20170118_1758'),
+    ]
+
+    operations = [
+        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'),
+        ),
+    ]