Added ungleich app to extend Page models.

Ungleich app has a model called UngleichPage,
this model has an attribute called image_header
which will be used to set the background image for
the page header.

Signed-off-by: rscnt <rascnt@gmail.com>

ungleich/migrations/0001_initial.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cms', '0011_auto_20150419_1006'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='UngleichPage',
+            fields=[
+                ('id', models.AutoField(serialize=False, primary_key=True, auto_created=True, verbose_name='ID')),
+                ('image_header', models.ImageField(upload_to='image_header')),
+                ('extended_object', models.OneToOneField(editable=False, to='cms.Page')),
+                ('public_extension', models.OneToOneField(editable=False, related_name='draft_extension', null=True, to='ungleich.UngleichPage')),
+            ],
+            options={
+                'abstract': False,
+            },
+            bases=(models.Model,),
+        ),
+    ]