Merge pull request #367 from cyrilraja/master

*fixed deleteFolder Issue
Removed the logic of fetching the collection items using username
Merge pull request #369 from sheebans/master

Removed the logic of fetching the collection items using username
*Implemented CORE-1278 [Scollection] Delete permission check validation in V2
*Implemented CORE-1274 [Class & Assignment] Delete access permission validation in V2