Brooklynites may no longer have to haul across the bridge and wait in endless lines for burgers, dogs, and concretes at the Shake Shack. Or at least they won't have to cross the bridge -- the Daily News reports that Danny Meyer will be opening a Shack outpost in Brooklyn, and it's going mobile. Unlike the Upper West Side outpost planned to open later this year, which will be a brick-and-mortar affair, Brooklyn will be......