Merge pull request #311 from cyrilraja/master

more changes on DO-4824
Core-1105 Added support for content Admin user
Merge remote-tracking branch 'gooru/master'
Merge pull request #312 from PurnimaGS/master

Core-1105 Added support for content Admin user
Added fix for Student count showing wrongly in my classes
Merge pull request #313 from skpcharles/master

Added fix for Student count showing wrongly in my classes
Added fix for cache clear issue in get folder item API
Merge pull request #314 from sheebans/master

Added fix for cache clear issue in get folder item API
Fixed null pointer expection
Merge pull request #315 from sheebans/master

Fixed null pointer exception
*Fixed Null Pointer Exception for creating classpage item