To read the hysterical coverage following last week’s Hardwell concert, you’d think that end times were upon us: thousands of feral, drug-abusing teenagers on the rampage with the Dutch DJ as their dark prince. The debate over the next couple of days was depressingly predictable, with fingers pointed at dance music, drugs and “prinking”, or pre-drinking – a catchy new name for a custom as old as the hills. Hardwell’s Edinburgh show was even cancelled as a frankly bizarre precaution. But there’s no need to panic. This was a 16+ event featuring a globally successful dance music star, in a…