Rosberg shakes off Hamilton's shadow

By Alan Baldwin ABU DHABI (Reuters) - Nico Rosberg lost a race and won a Formula One world championship on Sunday and a weight of history slipped from his shoulders as the tears flowed and a night of partying stretched out before him. From their days together as teenage karting team mates to mature Mercedes rivals, Britain's Lewis Hamilton has been the implacable rival against whom the German has measured himself and come short. "It feels like I’ve been racing him forever and always he&rsq