KNL-1255 fixed "View Site As" no longer working in some tools it previously worked in (cache invalidation)

git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@309531 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1254 fixed Sakai doesn't startup in legacy cache mode when ical.experimental is set.

git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@309533 66ffb92e-73f9-0310-93c1-f5514f145a0a