Photo by Ghost Bear.In a contest of teams built from the ground up by the two best general managers in Washington Capitals history, the Caps beat the Nashville Predators 3-2 last night at the Verizon Center. The two men — former GM David Poile and current GM George McPhee — have worked together in the past, when Poile made the best offer for his disgruntled former employee, Brendan Witt. Right now, the Capitals enjoy…