Support new method "initializeXYAction" in controllers
Controllers should check if a method "initializeFooAction" exists for an action "foo" and call it before the action "fooAction" is called. This method is supposed to replace the current "initializeArguments" method which should be removed.
- FLOW3: (MVC) A method called "initializeFooAction" will now be called before an action "foo" at a time arguments still can be registered. Resolves #3091
- FLOW3: (MVC) !!! Removed the initializeArguments() method from the ActionController. Use initializeXYAction() or initializeAction() instead!