Britons up and down the nation headed to the polls yesterday, with local elections going under the radar during a night of historic election results.While the media swarmed Andy Burnham's Westminster comeback and the Tories' hold on a Scottish National Party stronghold, councillors in Wales, Essex, and London's Lewisham borough are celebrating successes and beginning to shape the national debate from today.But, with chaos ensuing in Makerfield, …