Implemented CORE-1403([Authority] Need to use appropriate entity operation in APIs).
Implemented CORE-1403
Merge remote-tracking branch 'gooru/master'
Removed unwanted codes
Merge remote-tracking branch 'gooru/master'
Removed unwanted code
Merge pull request #524 from saravanab/master

Implemented CORE-1403([Authority] Need to use appropriate entity operation in APIs).
Merge remote-tracking branch 'gooru/master'
Merge branch 'master' of https://github.com/cyrilraja/Gooru-Core-API
Changed database connections