Fix "Cannot read property of undefined" errors on /play page (#4035)
Fix "Cannot read property of undefined" errors on /play page (#4035)


codecombat/codecombat,fabichoi/codecombat,javatlacati/codecombat,Zerrien/codecombat,Zerrien/codecombat,VilkkuV/codecombat,jeremiahyan/codecombat,icodegame/codecombat,javatlacati/codecombat,probil/codecombat,fabichoi/codecombat,jeremiahyan/codecombat,Zerrien/codecombat,codecombat/codecombat,icodegame/codecombat,javatlacati/codecombat,codecombat/codecombat,probil/codecombat,VilkkuV/codecombat,probil/codecombat,codecombat/codecombat,Zerrien/codecombat,probil/codecombat,icodegame/codecombat,javatlacati/codecombat,fabichoi/codecombat,fabichoi/codecombat,kidaa/codecombat,icodegame/codecombat,kidaa/codecombat,jeremiahyan/codecombat,kidaa/codecombat,VilkkuV/codecombat,javatlacati/codecombat,codecombat/codecombat,VilkkuV/codecombat,kidaa/codecombat,jeremiahyan/codecombat