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

from django.dispatch import Signal

request_started = Signal()
request_finished = Signal()
got_request_exception = Signal(providing_args=["request"])