Michael Brand is making his mark as director of the Getty Museum. “He’s haggling with Greeks. He’s dickering with Italians. He’s looking to fill a couple of big jobs while waiting to see who his new boss will be. And most of all, he’s trying to nudge the institution toward equilibrium after the most scandal-marred, morale-sapping year since the late J.P. Getty started showing off his art collection three decades ago.”