strip extra spaces from class string
strip extra spaces from class string

joaohf/nitrogen,stuart-thackray/nitrogen,kevinmontuori/nitrogen,choptastic/nitrogen,nitrogen/nitrogen,kaos/nitrogen,choptastic/nitrogen,robsc/nitrogen,nitrogen/nitrogen,joaohf/nitrogen,robsc/nitrogen,nitrogen/nitrogen,choptastic/nitrogen,kevinmontuori/nitrogen,stuart-thackray/nitrogen,kaos/nitrogen,joaohf/nitrogen,kevinmontuori/nitrogen,stuart-thackray/nitrogen