SAK-24431 - TimeoutDialog causes increased database CPU, queries, and Purepath size

git-svn-id: https://source.sakaiproject.org/svn/portal/trunk@130139 66ffb92e-73f9-0310-93c1-f5514f145a0a

Conflicts:
	portal-impl/impl/src/java/org/sakaiproject/portal/charon/handlers/TimeoutDialogHandler.java