Minor Fixes and Refactoring + ReviewFacade implemented

ReviewFacade Interface Added

GenericFacade implemented

GenericFacade implemented

Some changes due to merging

RecommendationService implemented with required functionality of persistence layer

RecommendationService implemented with required functionality of persistence layer

Minor fixes and lot of moves in structure
Lombok Added
Last online removed from user

RecommendationService implemented with required functionality of persistence layer

RecommendationService implemented with required functionality of persistence layer

ReviewDto added
Mapper added
Generic Service refactored
Missing exceptions added
Project structure refactoring
Lombok added (to some parts of project)

ReviewFacade Added + minor refactoring