Also flush the user's ACL's when flushing the sidebar
It is pretty pointless to flush the sidebar if the same ACL's will
be re-used anyway, so make sure the ACL's are flushed as well.
Patch by: Sverre Rabbelier
"""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