Our polygamous love affair with Grouplove and Foster the People is one of the worst kept secrets in music, so when the two LA heavyweights went head-to-head in the remix ring with each others' signature songs in tow, we had to step in and hold up the arms of both contenders because it's a win-win for the ages. Double winning.First up is Grouplove and Captain Cuts, who kicked of 2011 with one of