ADD new hooks replacecomments and additionaluserlinks

git-svn-id: http://svn.montala.net/svn/resourcespace@4845 c08608d7-6e46-0410-86ca-f2a6f1370df5
FIX change link to no_preview image from relative

git-svn-id: http://svn.montala.net/svn/resourcespace@4846 c08608d7-6e46-0410-86ca-f2a6f1370df5