def save(self, *args, **kwargs):
        if self.can_moderate:
            self.can_contribute = True

        super(UserGroup, self).save(*args, **kwargs)
remove gappy columns.
dataset/ETHPy150Open ExCiteS/geokey/geokey/users/models.py/UserGroup.save--crossover with--dataset/ETHPy150Open CGATOxford/cgat/CGAT/Mali.py/Mali.removeGaps