Fix class joining when entering it in the signup field
Fix class joining when entering it in the signup field

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