Crackle, as part of marketing this month’s debut of “Joe Dirt 2: Beautiful Loser,” has launched the “Hick Yourself!” app that lets fans of David Spade’s white-trash antihero add mullets, mustaches and other redneck accouterments to their photos. The movie, touted as the first digital sequel to a major theatrical movie, will launch July 16 on Crackle and available to...