Yurts, spas, beauty treatments, flushable toilets and even a helipad are now par for the course when attending Glastonbury. Festival-goers caked from head to toe in mud pose for a picture at Glastonbury in 2005 Andy and Liz from Yorkshire enjoys the first day of the Glastonbury Music Festival 2005 at Worthy Farm, Pilton on June 24, 2005 in Glastonbury …