SAN FRANCISCO, April 9 (Reuters) - A convicted murderer could be released from prison after 11 years because of a ruling on Friday that found it was wrong for family members of his victim to wear badges with an image of the victim during his trial. The United States Court of Appeals for the Ninth Circuit issued the ruling following a review of the case of Mathew Musladin, who was sentenced to life without parole in the 1994 murder of Tom Studer, his estranged wife's fiancé. The decision means that county officials must decide whether to retry the case or...