Добавил привязку устройства к группе

devapp/migrations/0004_device_user_group.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9 on 2017-02-22 19:24
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('abonapp', '0011_auto_20170222_2224'),
+        ('devapp', '0003_device_map_dot'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='device',
+            name='user_group',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='abonapp.AbonGroup'),
+        ),
+    ]