A better way to add site-wide ToS link to *all* pages on the site.
getUniversalContext() already fetches a copy of the Site settings, so use that
to see if the site-wide ToS exist and produce a link.
Patch by: Todd Larsen
Review by: to-be-reviewed
"""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