Peggy Noonan says it's about time
                                
                                
                                    (Newser) -
                                    Peggy Noonan has some advice for Mitt Romney in her latest  Wall Street Journal  column: He will be the nominee, so it's time to "suit up and get serious," she writes. "Get off the goofball express. Cheesy grits, jeans, singing, being compulsively pleasant, calling your opponents...