(Reuters) - Civil rights activist the Rev. Jesse James on Friday urged Grammy organizers to reinstate 31 ethnic and minority musical categories that have been cut from the music industry's top awards. In a letter to Recording Academy president Neil Portnow, sent three weeks before the February 12 Grammy Awards show, Jackson said the elimination of awards for Native American and Hawaiian musicians, and cuts in Latin Jazz, R&B and other categories were ill-considered and unfair. ...