Forget your troubles, come on get happy with Lighten Up! A program of dances to make you smile, giggle, or laugh out loud.  Dances by modern dance pioneer Helen Tamiris (staged by Elizabeth McPherson) and Beverly Blossom, and contemporary choreographers Antonio Fini, Claire Porter, Henning Rubsam, Margo Sappington, and Bradley Shelver.   Performers: Valentina Kozlova, Andre Jouravlev, Aoi Matsuda, Fini, Porter, Rubsam, the Joffrey Concert Group NY, Dancers from the Joffrey Ballet School NY, and the Montclair State University Dance Ensemble.