RoleSchoolAdapter added. PersonFacadeTest updated

- RoleSchoolAdapter.java added, so we can hardcode the serialization
and deserialization of a RoleSchool-object
- Updated PersonFacadeTest so it has 100% (Only on Mock)
- Updated Student.java (’s’ in roleName set to uppercase)

- Still need to add code to @Before annotation in test

commit: Thomas  Christopher