- tag=tagName returns only bookmarks which match tagName in a single XBEL-folder tagName
- added metadata for public=true/false to XBEL output
- added the attribute 'added' (date) to XBEL output
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4791 6c8d7289-2bf4-0310-a012-ef5d649a1542