Added CTFAPIMappings for keeping mapping away from requests implementation.
[FIX] RestKit wasn’t create its managedObjectContexts.
[MOD] Test updated. Added temporary code to CTFLoginViewController. Mapping works correctly but there is some issue in RestKit. It has been reported.
[CTFGUILD-10] Added tests for CTFCharacter class mapping.
Updated -signUpWithUsername:email:password:block: method description.