Two leaders of Cuba's tiny Jewish community have visited an imprisoned U.S. government contractor, celebrating the Jewish New Year with him in a small private room near his cell.     The Jewish leaders, Adela Dworin and David Prinstein, said in an email sent to journalists Friday that they spent two hours with Maryland-native Alan Gross on Wednesday and found him to be in good spirits and health. As host, Gross led the three in a traditional toast "to life," and the three shared sweets and coffee. …More