Asher Roth might be one of the biggest breakout stars of the year. His hit “I Love College” made him into an instant cult hero on the university circuit, and his significant skills on the microphone have allowed him to team up with some of the best in the business. One particular tag team that might not be as expected? Justin Bieber, the 15-year-old singer who took the music world by storm with a series of online videos and a commitment to Twitter. Roth and Bieber share a manager, and he said that the two of them first moved to Atlanta around the same time, which lead to an interesting...