Marvin Bartley has won a third of his matches as a manager [SNS]Marvin Bartley has been appointed Stenhousemuir manager and will come up against former club Livingston next month.The Englishman, 39, replaces Gary Naysmith, who had agreed to join Ayr United before sealing Stenny's promotion to the Scottish Championship via the play-offs.Bartley left Livi after their relegation from the Premiership, saying he and assistant Neil Hastings felt they "had no option but to resign" after being asked to