* Implemented CORE-1499 update mediaType in updateResourceCollectionItem
Moved the data source creation logic from api core to rest-app
Merge pull request #498 from sheebans/master

Moved the data source creation logic from api core to rest-app
Moved the data source creation logic from api core to rest-app
Merge pull request #497 from cyrilraja/master

* Implemented CORE-1499 update mediaType in updateResourceCollectionItem
Changed coding exceptions for ServiceImpl
Merge pull request #499 from sheebans/master

Moved the data source creation logic from api core to rest-app
removed cache logic by apitoken
Merge pull request #500 from sheebans/master

removed cache logic by apitoken
Made Changes pertaining to task DO-5232(6.5.c Parallel [System] reset password link does not work at Parents confirmation email).
Merge remote-tracking branch 'gooru/master'
Merge branch 'master' of https://github.com/cyrilraja/Gooru-Core-API
Added fix for standards reorder issue and standards
Excluded the fourth level for some of the standards
Merge pull request #502 from sheebans/master

Excluded the fourth level for some of the standards
Merge pull request #501 from saravanab/master

Made Changes pertaining to task DO-5232(6.5.c Parallel [System] reset pa...
Added Google Guava dependency
Merge pull request #503 from RenukaGurumurthy/master

Added Google Guava dependency
Merge remote-tracking branch 'gooru/master'
removed default level in get concept method