Fixed Bug #1511: Cannot access files in default folders.
The URL for a file-storage folder contains I18Nized strings and the tcl pages don't localize them. Furthermore some of the links were missing @?version_id=@contents.live_revision@
Files in default folders can now be accessed, but there is at least one more I18N glitch.
Pulled out the call to get__path from the main query in 'folder-chunk' and added a separate query before that db_multirow - suggested by Dave and Don for scalability reasons.