LA Times: For at least one more summer, vacationers on Martha’s Vineyard won’t be able to gaze across the water and see, far off on the horizon, the churning blades of offshore wind turbines — no matter how badly the island’s most famous current vacationer would like. President Obama, now summering on the Massachusetts island with his family, is still at least a year away from seeing turbines take root anywhere off the U.S. coast, even though his administration promised to make offshore wind a …