LONDON (Reuters) - Singer Nicole Scherzinger has been named as a judge on the British version of ratings juggernaut "The X Factor", less than six months after being fired from the U.S. edition of the TV show. The 33-year-old American is replacing compatriot Kelly Rowland, and joins Louis Walsh, Gary Barlow and Tulisa Contostavlos, all of whom appeared last season. "I can't wait to see what ...