Removed the header sizes demo
Removed the header sizes demo

mysociety/popit,mysociety/popit,mysociety/popit,mysociety/popit,openstate/popit,openstate/popit,Sinar/popit,maxogden/popit,openstate/popit,Sinar/popit,maxogden/popit,Sinar/popit,openstate/popit,Sinar/popit,mysociety/popit