THOUSAND OAKS, California, Nov 30 (Reuters) - Graeme McDowell will take a 10-week break after the World Challenge ends on Sunday to recharge his batteries for a hectic 2013 campaign on both sides of the Atlantic. The globe-trotting Northern Irishman competes regularly on the PGA and European tours and has decided to finish his 2013 U.S. schedule in August, earlier than usual, before switching ...