“Off the Map” directed by Campbell Scott (Big Night), is a tender portrait of a quirky mid-70s New Mexico family living off-the-fat-of-the-land as well as off-the-grid in the dusty Taos desert. Joan Allen plays the sun-kissed matriarch whose notion of personal freedom includes gardening in the nude. Meanwhile, scrappy pre-teen daughter Bo (fresh-faced newcomer Valentina…