Implemented :
Nick's Exceptions code + logic in Facade + renaming in FacadeInterface (for exceptions)
Peter's logic for CascadeType in Person entity class
Changes in Entity (TeacherAssistant)
Improvements in logic in Facade (deal with all kind of RoleSchool extending classes now)
Added singleton in Facade (team idea)
Fixed some errors here and there yolo :)
Starting on RestCRUD
v0.5