By Denny Dyroff, Entertainment Editor, The Times Thurgood Over the last few weeks, there have been two shows at area theaters with a focus on civil rights leaders. The first was “The Mountaintop,” a show about Martin Luther King, Jr. that just finished a run at the Uptown Knauer in West Chester. Now through March 19, People’s Light (39 Conestoga Road, Malvern, www.peopleslight.org) is presenting...