GAE started counting UrlFetches to the free quota of incoming bandwith
and this made the app go over it's daily limit. Limited to only 50%
should be able to keep it under limit but users may miss some new
content if they arrive in burst or clients don't update frequently.
-Using v5 Twitch API
-Caching for userids
-Using the largest thumbnail available
-Adding description if available
-Changed feed date to creation time
-Changed feed title to use display name
-Some extra error handling + cleanup