BOSTON - Teresa Heinz Kerry had just told Pennsylvania Democrats that she was "unscripted" by nature. Then, she proved it. Minutes after the wife of presumptive Democratic presidential nominee Sen. John F. Kerry commented on campaign ads targeting her husband, Heinz Kerry told a journalist to "Shut up. Shove it." The encounter occurred at a reception yesterday at the Massachusetts State House for the Pennsylvania delegation to the Democratic National Convention. Kerry is to formally accept the party's nomination for president Thursday night.Heinz Kerry, the Pittsburgh billionaire who controls the Heinz family charities, spoke for about 10 minutes to the...