How set designer Jason Sherwood put Studio 54, The Mudd Club and Andy Warhol's Factory all on one stage---How do you conjure three legendary hot spots from New York's past in an intimate Off-Broadway venue? That's the formidable challenge 28-year-old scenic designer Jason Sherwood faced with This Ain't No Disco at Atlantic Theater Company. A world-premiere rock opera written by Stephen Trask (of Hedwig and the Angry …
