SAK-21170 improving the locales defaults in demo and experimental props

git-svn-id: https://source.sakaiproject.org/svn/config/trunk@121483 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1035 adding session.max.per.user to default properties

git-svn-id: https://source.sakaiproject.org/svn/config/trunk@121484 66ffb92e-73f9-0310-93c1-f5514f145a0a