Things have already gotten started on the sequel to 'The Muppets,' and today we move one step closer to hitting the music and lighting the lights. The title, and a snippet of the plot, for the the followup to the 2011 return of our beloved felt-covered friends has just been revealed. The movie will be called 'The Muppets...Again.' The story will revolve around the Muppets as they are enjoying the…