add customer field to osusers.models.User

- allow association of os users to Django users (customers)
- adapt admin forms
- add migration

gnuviechadmin/osusers/migrations/0003_user_customer.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+from django.conf import settings
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('osusers', '0002_auto_20141226_1456'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='customer',
+            field=models.ForeignKey(default=1, to=settings.AUTH_USER_MODEL),
+            preserve_default=False,
+        ),
+    ]