disabled  writing log for otherthan 500 errors
Merge pull request #694 from PurnimaGS/master

fixed api call issue in Authentication
Added error exception for ivalid media upload
added support for retrieve shelf gooruOid
Merge pull request #696 from sheebans/master

added support for retrieve shelf gooruOid
added fileter support in getApplication and getMyshelf
Merge pull request #697 from skpcharles/master

added fileter support in getApplication and getMyshelf
Fixed issues LTI consume key and secret
Merge branch 'master' of https://github.com/Gooru/Gooru-Core-API
Merge pull request #695 from vksvenkat/master

Added error exception for ivalid media upload
Core-1876 Added Application Type in Application Controller