[FIX] Link added for "Rebuliding the preferences search index".

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48339 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] CSS added to avoid hiding, option text on jquery Chosen

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48340 b456876b-0849-0410-b77d-98878d47e9d5