A former postal supervisor has pleaded guilty to charging more than $50,000 in personal expenses to government issued credit cards. Austin T. Mahan, 44, of the Cape May Court House section of Middle Township, pleaded guilty to misappropriation of postal funds in Camden federal court, the U.S. Attorney’s Office District of New Jersey said in a news release on Monday. Mahan, who worked as a supervisor at the Somers Point and Sea Isle City U.S. Postal Service offices, was charged with the federal crime in May 2023 and waived a grand jury indictment. During a six month period in 2022 and 2023, he …