Just over a week after Tiffany Cabán declared victory in the race for Queens district attorney, a last-minute twist placed her opponent, Melinda Katz, ahead by 20 votes. The unexpected turn has forced a manual recount and will send both candidates to court.Cabán, a public defender, led Queens Borough President Katz by 1.3 percentage points when she claimed victory in the contentious Democratic primary on June 25. With 99 percent of the precincts reporting, Cabán held the lead with 33,814 votes over...