[MOD] Allow to set a property on wiki pages to alter the layout

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48436 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Notice

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48437 b456876b-0849-0410-b77d-98878d47e9d5