Add CreateMenuItemFromNodeEvent and dispatch in createFromNode.
Add publish workflow listener on new CreateMenuItemFromNode evento
to remove unpublished items from the menu.
Remove publish workflow checker from content factory in favor of event
listener.
Add menu referrer implementation for dynamically adding items to menus.
Add CreateMenuItemFromNodeEvent and dispatch in createFromNode.
Remove publish workflow checker from content factory in favor of event
listener.
Switch event dispatcher to type hint on interface.
Merge branch 'add_dynamic_menus' of github.com:benglass/MenuBundle into add_dynamic_menus

Conflicts:
	ContentAwareFactory.php