Minor improvements to roles page
Mainly not hard-coding the page name and showing all requests
that are _accepted_, instead of the one's that aren't yet.
"""Multi-consumer multi-producer dispatching mechanism
Originally based on pydispatch (BSD) http://pypi.python.org/pypi/PyDispatcher/2.0.1
See license.txt for original license.
Heavily modified for Django's purposes.
"""
from django.dispatch.dispatcher import Signal