Starting fixing customerMapper changed DBFacades methods

Changed custmer mappers to dataSource package
Modified customerMapper
Added interface to customerMapper
Started working on changes to the tests for the new way of approaching saving a reservation
Updated all tests to fit our new DBFacade method

Added CustomerMapperMock and tested it by putting it tother with the ReservationMapperMock tests which 
now test the new saveRegistrationInformation method.
Removed unnecesarry things in the test code
Added test for CustomerMapper
Put all fixture code into one fixture and made it look clean and easy to follow