Added translations for form display. Added a todo to the selectOrAdd form type.
Refactored the controller inheritance model.
ORM related controler logic is now located in ORMController.
If the logic is needed from another controller, forwarding can be used (not the case by now, since it is requested from the view).
The DTADomainController forms the base class for all domain controllers, providing the basic structure (domain key, domain menu) and two functions to render accordingly.