Allow default=None in config.get_list
Allow default=None in config.get_list

alkadis/vcv,phihag/adhocracy,alkadis/vcv,liqd/adhocracy,alkadis/vcv,phihag/adhocracy,alkadis/vcv,phihag/adhocracy,liqd/adhocracy,DanielNeugebauer/adhocracy,DanielNeugebauer/adhocracy,liqd/adhocracy,DanielNeugebauer/adhocracy,liqd/adhocracy,DanielNeugebauer/adhocracy,DanielNeugebauer/adhocracy,alkadis/vcv,phihag/adhocracy,phihag/adhocracy