WHITEWATER, WI (AP) -- His 12 years as an undergraduate have made Johnny Lechner a celebrity of sorts, so why not go for 13? Lechner was expected to graduate at last from the University of Wisconsin-Whitewater this spring, but instead he withdrew his application for graduation five days before commencement. "I realized that if I went one more year, I could study abroad," Lechner said. "That's one thing I haven't done." Lechner has had his story told in newspapers and network television shows, not to mention campus publications across the nation that have picked up stories from UW-Whitewater's student newspaper,...