Disturbing rumors of Louisiana ex-mayor Misty Roberts having illicit relationships with teenage boys and stints in rehab had already dogged the disgraced leader before she landed in court for bedding her son’s 16-year-old friend, according to shocking court records. The small-town gossip was apparently damaging enough that Roberts’ lawyers fought to ban it from her trial on sex crime charges, in which she was swiftly found guilty Tuesday of having sex with her son’s best friend. The motion