St James Theatre, New YorkThe hilariously deranged riff on Titanic loses some scrappy charm in its Broadway transfer According to its creators, the idea for TitanÃque, the extremely campy Céline Dion jukebox musical now open on Broadway, originated as a drunken riff between friends " what if the Québécois Queen of Feelings not only sang the theme song of the movie Titanic, but sincerely believed she survived th…