KNL-1090 Indicate when caches don't have statistics enabled
Patch from Matthew Buckett (Oxford), minor tweaks by AZ



git-svn-id: https://source.sakaiproject.org/svn/kernel@125957 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1088 Setting a session timeout value shorter than the default has no effect
Patch from Stephen Marquard (UCT)



git-svn-id: https://source.sakaiproject.org/svn/kernel@125958 66ffb92e-73f9-0310-93c1-f5514f145a0a