Closes #412: Tenant group assignment is no longer mandatory

netbox/tenancy/migrations/0002_tenant_group_optional.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.8 on 2016-08-02 19:54
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tenancy', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tenant',
+            name='group',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='tenants', to='tenancy.TenantGroup'),
+        ),
+    ]