This year the head writers of The Chicago Bar Association’s annual Bar Show, attorneys Clifford E. Berman and David S. Miller, took a page out of the works of Charles Dickens for the title for the 92nd annual production of the social and political satire by calling it “A Christmas Quarrel: A Tale of Two Parties.”The show, which runs Wednesday through Dec. 6 at DePaul University’s Merle Reskin Theatre, 60 E. Balbo Drive, is not unlike the journey of Ebenezer Scrooge.It takes Uncle Sam (Lawrence H …