Danny Boyle is teaming up with controversial artist Banksy for a Christmas special. The Trainspotting and Slumdog Millionaire director is fronting The Alternativity, an hour-long film for BBC Two, that will see him travel to Bethlehem to capture a festive performance of the nativity created by Banksy. The artist is putting on the event in the carpark of his The Walled Off hotel around the corner from Manger Square, Bethlehem – believed to be the birthplace of Christ…