SAK-23259

Added the ability to lock down portal chat users to only those users with portal.chat.permitted set
in their MyWorkspace. Initial patch from Tania Tritean of ISDC.


git-svn-id: https://source.sakaiproject.org/svn/portal/trunk@127018 66ffb92e-73f9-0310-93c1-f5514f145a0a