Kylian Mbappe reacts. —AFP/FileBARCELONA: Much of Real Madrid’s season has been a balancing act and they finally fell completely off the rails on Sunday as Barcelona sped away from them on the way towards reclaiming the Spanish title.Kylian Mbappe scored a hat-trick but the Catalans came from two-goals down to win 4-3 and the margin of victory might have been larger still, were it not for some contentious refereeing calls in the final stages in Madrid’s favour.Coach Carlo Ancelotti...