[NEW] Admin wizard detail setting page for Namespace
Uses conditional display. Only shown, if namespaces are selected.
[ENH] Remove the namespace seperator setting in the wiki setup page.
It's now in the detail settings page.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@47536 b456876b-0849-0410-b77d-98878d47e9d5