Catch all Steam errors when calling User.update_steam_name - this isn't important enough to bring the app down.  Fixed #4.
On user registration, set their name to their account ID and call update_user_name, instead of calling the Steam API directly. Fixes #7.
Catch IntegrityError on registration. Fixes #8
Catch InvalidRequestError when trying to delete a non-existant replay alias.  Fixes #9