Add event-specific groups and signals

users/migrations/0001_initial.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.3 on 2017-07-20 13:37
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('auth', '0008_alter_user_username_max_length'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='GEGroup',
+            fields=[
+                ('group_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='auth.Group')),
+            ],
+            bases=('auth.group',),
+        ),
+    ]