[bp/r52264][FIX] maps: Offset of tooltips popup changed probably due to bootstrap page structure changes, now simpler (thanks Geoff) 
Actually fixes tooltip positioning problems in 12.x when map is inside an appframe - and simpler is better :)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52420 b456876b-0849-0410-b77d-98878d47e9d5