Fix /teachers/demo to work when not logged in
Fix /teachers/demo to work when not logged in

VilkkuV/codecombat,jeremiahyan/codecombat,differentmatt/codecombat,javatlacati/codecombat,icodegame/codecombat,duybkict/codecombat,probil/codecombat,duybkict/codecombat,tpai/codecombat,codecombat/codecombat,UltCombo/codecombat,probil/codecombat,jeremyprice/codecombat,VilkkuV/codecombat,differentmatt/codecombat,javatlacati/codecombat,edtrist/codecombat,tpai/codecombat,Zerrien/codecombat,icodegame/codecombat,tpai/codecombat,tpai/codecombat,differentmatt/codecombat,UltCombo/codecombat,Zerrien/codecombat,fabichoi/codecombat,jeremiahyan/codecombat,javatlacati/codecombat,javatlacati/codecombat,zhangxiuquan/codecombat,edtrist/codecombat,fabichoi/codecombat,UltCombo/codecombat,probil/codecombat,kidaa/codecombat,icodegame/codecombat,kidaa/codecombat,jeremyprice/codecombat,icodegame/codecombat,Zerrien/codecombat,UltCombo/codecombat,duybkict/codecombat,kidaa/codecombat,zhangxiuquan/codecombat,zhangxiuquan/codecombat,codecombat/codecombat,differentmatt/codecombat,khoa102/codecombat,Minhir/codecombat,jeremiahyan/codecombat,jeremiahyan/codecombat,VilkkuV/codecombat,Minhir/codecombat,duybkict/codecombat,jeremyprice/codecombat,codecombat/codecombat,zhangxiuquan/codecombat,Minhir/codecombat,fabichoi/codecombat,khoa102/codecombat,edtrist/codecombat,probil/codecombat,kidaa/codecombat,codecombat/codecombat,Minhir/codecombat,VilkkuV/codecombat,fabichoi/codecombat,edtrist/codecombat,codecombat/codecombat,khoa102/codecombat,javatlacati/codecombat,khoa102/codecombat,jeremyprice/codecombat,Zerrien/codecombat