[0.85] add tag for document - fixed #4353

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@21775 35612d4c-9d10-0410-837c-bf9dd1be60d7
apply r21695 + r21696

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@21776 35612d4c-9d10-0410-837c-bf9dd1be60d7