Add deleted in r732 (don't know why) functionality that displays custom Error page when linkname in Developer User Profile url doesn't exist (/site/user/profile/<not_existing_linkname>). Patch by: Pawel Solyga Review by: to-be-reviewed

#!/usr/bin/env python
from django.core import management

if __name__ == "__main__":
    management.execute_from_command_line()