TULSA, Okla. — More than a year after Richard Roberts resigned as president of Oral Roberts University (ORU) amid allegations of lavish spending, the charismatic Christian university in Tulsa, Okla., has hired a new president. Mark Rutland, president of Southeastern University, a Christian liberal arts college in Lakeland, Fla., since 1999, will take the helm of ORU on July 1,…