Merging Release 4.3.0 to master (#962)

* Issue #SC-2186 feat:Api to fetch user roles by id (#930)

* Issue #SC-2318 feat:refactored User declarations api (#931)

* Issue #SC-2306 feat:refactored search apis (#932)

* Issue #SC-2306 feat:refactored search apis

* Issue #SC-2306 feat:refactored user exist api (#933)

* Issue #SC-2306 feat:refactored user exist api

* Issue #SC-2186 feat:learner chnages for rbac support (#934)

* Issue #SC-2186 feat:learner chnages for rbac support

* Issue #SC-2306 feat: refactored userProfileReadService class (#935)

* Issue #SC-2306 feat: refactored userProfileReadService class

* Sc 2306 getbykey (#936)

* Issue #SC-2306 feat: refactored get User by key and loginid api

* Issue #SC-2302 feat:Refactored Notes API (#937)

* Issue #SC-2302 feat:Refactored Notes API

* Issue #SC-2128 feat: fixed akka configuration (#939)

* Issue #SC-2128 feat: fixed akka configuration

* SB-26259: backward compatibility change for new notification service (#9...