ROME (Reuters) - Italy's government is in talks with the European Union over a rescue plan for cooperative bank Popolare di Bari, which was put under special administration by the Bank of Italy in December, Economy Minister Roberto Gualtieri said on Friday.Popolare di Bari, the biggest bank in the south of the country, is the latest in a series of Italian banking meltdowns, which in total have cost the state and other Italian lenders around 23 billion euros ($25.5 billion) since 2015."Talks with..