Moved is_featured property to Document
Only Documents can be featured in the sidebar, as such it makes sense
to have this property in the Document model.
Patch by: Sverre Rabbelier
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)