Add documentation about templates
Change documention rel RadRestControllerInterface::getRouteName()

 * getRouteName() must be public (a3f7c6f183ba9fdf6b327d9b5b3db17e2e3aa45f)
 * All possible route names must be handled without throwing exceptions.
   (ControllerVariables::route() in edd16c4d01eeb5120831e1a2249a80f1adb1631e)