Joe EskenaziSupervisor John Avalos admits that taking post-election donations from former political enemies looks bad -- but having a massive campaign debt is badYou'd think making a donation to a San Francisco supervisorial candidate would be a bit like a horse race: You make your "bets," you cheer down the stretch, and, if you bet correctly, you get a "return." In some ways it's like that. But once the horses cross the finish line, the analogy blows up. In a San Francisco supervisorial horse r