Add groups (Jedi, Padawan, Droid) in database

apps/rp/migrations/0017_groups.py

+from django.db import migrations
+from django.contrib.auth.models import Group
+
+def add_groups(apps, schema_editor):
+    groups = ['Jedi', 'Padawan', 'Droid']
+
+    for i in groups:
+        group = Group(name=i)
+        group.save()
+
+def remove_groups(apps, schema_editor):
+    Group.objects.all().delete()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('rp', '0016_auto_20170617_0929'),
+    ]
+
+    operations = [
+        migrations.RunPython(add_groups, reverse_code=remove_groups),
+    ]