Make username case insensitive

server/users/schema/mutations_public.py

@@ -20,6 +20,9 @@ class BetaLogin(relay.ClientIDMutation):
             password = kwargs.get('password_input')
             username = kwargs.get('username_input')
 
+            if username:
+                username = username.lower().strip()
+
             # Login with email
             if '@' in username:
                 user = User.objects.get(email=username)