PHILADELPHIA (Reuters) - New Jersey announced a new tourism slogan on Thursday in an effort to shrug off the state's grim reputation for traffic jams, mobsters and toxic waste dumps. "New Jersey: Come See for Yourself," was the winning entry in a statewide contest that attracted some 7,800 entries. The public was asked for suggestions after Acting Gov. Richard Codey rejected "New Jersey: We'll Win You Over" -- a slogan devised by an image consultant at the cost of $260,000 -- as too negative. State officials earlier rejected sardonic entries including: "Come Out to New Jersey: It's Not as Bad...