By Lauren Gill Staff Writer Belgian-born, Australian-bred Gotye (real name Wouter de Backer) confirmed that he is much more than a one-hit wonder with his electric sold-out show Friday night at the Tower Theatre in Upper Darby. First to perform that evening was Gotye’s opening-act Kimbra, a doll-like Kiwi dressed in a ruffly blue prom-dress-gone-bad....