(image via Boston.com) Well, it’s official. The hipster headdress has gone British. Last week was the Glastonbury music festival in the UK, a huge music spectacular not unlike Coachella, or The Bamboozle, or Sasquatch! or Lightning in a Bottle here in the US. Boston.com posted an image of festival goers sporting the (no-longer) edgy hipster headdress, maddening, but pretty unsurprising, …