Shrinksafe complains during compression of map JS fixed.
It comes that "long" can't be used as a variable name as we did,
because Shrinksafe complains that "long" is a reserved keyword.
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)