Fix I18NEditLevelView for empty noteGroups in levels
Fix I18NEditLevelView for empty noteGroups in levels

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