Fixed UUID vs str comparison when getting User (#42)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#42

epdb/logic.py

@@ -62,7 +62,7 @@ class UserManager(object):
 
     @staticmethod
     def get_user_by_id(user, user_uuid: str):
-        if user.uuid != user_uuid and not user.is_superuser:
+        if str(user.uuid) != user_uuid and not user.is_superuser:
             raise ValueError("Getting user failed!")
         return get_user_model().objects.get(uuid=user_uuid)