Tony Hall is taking his fight with San Francisco Mayor Gavin Newsom to a whole new level -- and maybe to court. Hall, the former supervisor from west of Twin Peaks, has filed a blistering legal claim against the city alleging he was unfairly fired from his $159,000-a-year job as Treasure Island czar last year. Hall was voted off the island, he says, in retaliation for having blown the whistle on a sweetheart deal involving Newsom and the former Navy base's main developer, Darius Anderson, a big Democratic fundraiser and Newsom supporter. The mayor's handpicked Treasure Island Development Authority voted...