FRANKFURT (Reuters) – The MTV Europe Music Awards bring the pop circus to Frankfurt on Sunday, with Barbadian R&B singer Rihanna leading the nominations and the late Whitney Houston to be honored with a Global Icon award. Houston, who was found dead in a Beverly Hills hotel bathtub on February 11, will be the third artist to be given the award, following Bon Jovi and Queen in 2010 and 2011. “Whitney Houston may be gone, but her legend lives on,” the organizers said. …