:bug:Fix trial class averages script to exclude practice levels
:bug:Fix trial class averages script to exclude practice levels

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