Merge remote-tracking branch 'gooru/master'
more changes on content meta association
Merge pull request #592 from cyrilraja/master

*throwing exception added in logs for session attempt try
added validation for invalid file in media API
Merge remote-tracking branch 'gooru/master'
Merge pull request #593 from skpcharles/master

added validation for invalid file in media API
added validation for admin portal APIs
Implemented few more Changes to CORE-1236
Merge pull request #594 from saravanab/master

Implemented few more Changes to CORE-1236
Added fix for scollection re-index throws null pointer
Method to get upper bounds in a collection
core 1560 Storing root node ids along with standards and discription
Merge pull request #596 from RenukaGurumurthy/master

Added methods to get upper bounds in a collection
Core-1667  Pagination support for Admin portal
Merge remote-tracking branch 'gooru/master'
Merge pull request #595 from skpcharles/master

added validation for admin portal APIs
Merge remote-tracking branch 'gooru/master'
Core-1667 more changes in pagination
Merge pull request #598 from PurnimaGS/master

Core-1667 Pagination support for Admin portal
Core-1667 Pagination changes in Oauth