These changes should have been in r620, but somehow I did not save them, or
saved over them with an old copy in the editor. Not sure...
from django.core.management.base import NoArgsCommand
class Command(NoArgsCommand):
help = "Validates all installed models."
requires_model_validation = False
def handle_noargs(self, **options):
self.validate(display_num_errors=True)