ART: We hear Goldmine Shithouse is visiting the Grey Gallery, but you wouldn't know it from either of their sites. The GMSH calendar ends in February, while the Grey Gallery still invites you to their January grand opening. Thank god they have booze to draw you in anyway. Now, about the scruffy guests they're expecting. Goldmine Shithouse is an artist cooperative: They focus primarily on painting, drawing and collage, and have extended into the......