Merge pull request #316 from cyrilraja/master

*Fixed Null Pointer Exception for creating classpage item
added fix for type cast issue
Merge pull request #317 from sheebans/master

added fix for type cast issue
Provided api support for sort by due date earliest
Merge pull request #318 from sheebans/master

Provided api support for sort by due date earliest
Removed cache support in getFolderitem api cal
Merge pull request #319 from skpcharles/master

Removed cache support in getFolderitem api cal
Core-1105 Changes made in sql for order by created date in Collection Repository
Merge remote-tracking branch 'gooru/master'
Merge pull request #321 from PurnimaGS/master

Core-1105 Changes made in sql for order by created date in CollectionRepository
Core-1105 Changes made for collection Publish
Merge pull request #322 from PurnimaGS/master

Core-1105 Changes made for collection Publish
CORE-1145 added api call to reject collection publish in bulk
Merge remote-tracking branch 'gooru/master'
Merge pull request #323 from PurnimaGS/master

CORE-1145  Added api call to reject collection publish in bulk
Added fix for negative collection count issue
Merge pull request #324 from sheebans/master

Added fix for negative collection count issue
Added fix for recently sorted assignment
Merge pull request #325 from sheebans/master

Added fix for recently sorted assignment
Core-1145 Added pagination and total collection count for bulk collection