Implemented Changes to CORE-1236
Merge remote-tracking branch 'gooru/master'
Implemented more changes to core-1236(In GAT in get Assignments API add the assignment no,collection title,collection creator fields and search filters).
Merge remote-tracking branch 'gooru/master'
Implemented few changes to CORE-1236
Implemented CORE-1644(Add sharing field in getFolder api for GAT).
Merge pull request #577 from saravanab/master

Implemented Changes to CORE-1236