Is it weird to be in your 30s and still singing about going to school and dancing at the disco? Not if 6,000 other 30-somethings are doing it with you. Noughties boyband Busted brought a huge crowd of millennials together for a night of pop-rock nostalgia as part of this year’s Margate Summer Series, hosted at the stunning outdoor venue, Dreamland. It started with a warm-up from support acts SOAP and Noahfinnce, both used to performing in front of a sea of people. Fans might recognise SOAP, who supported Busted on their nationwide arena tour last year, while Noahfinnce played to a sold-out cro…