Added getSurveyForContent method to SurveyLogic.
This method returns a Survey for a given content. The backreferenceproperty will not work because of inheritance.
from django.core.management.base import AppCommand, CommandError
class Command(AppCommand):
help = "RENAMED: see 'sqlcustom'"
def handle(self, *apps, **options):
raise CommandError("This command has been renamed. Use the 'sqlcustom' command instead.")