LAS VEGAS (Reuters) – Colombian rocker Juanes and the Mexican brother and sister pop duo Jesse & Joy took home the top Latin Grammys on Thursday in Las Vegas on a night in which the contemporary triumphed over the traditional. Juanes, one of the most well known Latin American stars worldwide, won the coveted album of the year with his "MTV Unplugged," which also won best long-form video. Dominican singer and songwriter Juan Luis Guerra won producer of the year for Juanes' album. …