Since the purpose that StatusHelper was mainly created for no longer
holds, it was simplified to Messenger. It is now is used to transport
simple messages to views and still transports info whether the message
is about success or failure.
Whenever DOM update event handlers were executed, jQuery bindings were appended
instead of being replaced. It resulted in funny scenarios like starting to show
multiple confirmation dialogs when trying to delete a post, after
adding/removing it from favorites.
