Fixed null pointer issue in updatepartycustomfield.
Merge pull request #717 from sarala0927/master

Fixed null pointer issue in updatepartycustomfield.
added fix for StaleStateException for delete collection
Merge pull request #720 from sheebans/master

added fix for StaleStateException for delete collection
Implemented V2 role management API
Merge branch 'master' of https://github.com/Gooru/Gooru-Core-API
API call fixed the string length >15