[ENH]Clean interface a bit by means of moving descriptive text shown next to preferences in wizard screens into the description box shown upon mouseover next to each preference (thanks arildb). Minor layout improvements in some screens (jcapture & namespace). Distinguish pref names for show user's info on mouseover and improve description (thanks jonnyb)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@47685 b456876b-0849-0410-b77d-98878d47e9d5