HARTFORD — The aging Connecticut mobster authorities believe has info on the infamous Isabella Stewart Gardner Museum art heist had a list of the paintings — with dollar amounts — in his home, and botched a lie detector test in which he claimed not to know the location of the 13 missing masterworks, prosecutors revealed today.The details emerged at the sentencing of Robert Gentile, a reputed 76-year-old made member of the La Cosa Nostra crime family who pleaded guilty in November to federal drug and gun charges.