[FIX] maps: Change URL for experimental StreetView layer as previous one is no longer supported - better fix using something like StreetViewCoverageLayer needed in the long term...

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49628 b456876b-0849-0410-b77d-98878d47e9d5