A who's who of Democratic officials turned out to celebrate scandal-scarred Rep. Charles Rangel's 80th birthday last night -- whooping it up as if he didn't have an ethics charge in the world. In fact, former Mayor David Dinkins, 83, went so far as to flip the bird to a protester who called Rangel a "crook" outside The Plaza hotel gala. Not everyone matched Dinkins' gusto, but the New York political establishment did turn out in force. Attorney General Andrew Cuomo, Sens. Chuck Schumer and Kirsten Gillibrand and Mayor Bloomberg all took turns at the mike to heap praise on...