[FIX]Added basic css to help distinguish the info coming from the drilldown menu. Feel free to improve. Thanks robertplummer for info on how to use the drilldown menu for structures

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@51436 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]Add to admin wizard some missing initially-disabled checkboxes or options from useful features related to structures for new installs

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@51438 b456876b-0849-0410-b77d-98878d47e9d5