Fix default admin user

- Fix error: RelatedObjectDoesNotExist: User has no userattributes.
  "instances/views.py", line 162, in check_user_quota

accounts/migrations/0002_addAdmin.py

@@ -11,6 +11,7 @@ def add_useradmin(apps, schema_editor):
     admin = User.objects.create_superuser('admin', None, 'admin', last_login=timezone.now())
     UserAttributes(user=admin, max_instances=-1, max_cpus=-1, max_memory=-1, max_disk_size=-1).save()
 
+
 class Migration(migrations.Migration):
 
     dependencies = [