For the second year in a row, David Richard Contemporary is acting like a big-city gallery or art museum by presenting a curated exhibition of the multifaceted and dynamic innovations of contemporary art after World War II. “Southern California Painting, 1970s: Painting Per Se” follows last year’s “1960s Revisited” show of paintings from both East and West coasts. But this year is 2011, and it is the year for Southern California art. Unless you have just emerged from five or