[0.85] fix bug for plugin if fr_FR in report of plugin (apply r21447)

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21710 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] gettext - fix duplicate string

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21711 35612d4c-9d10-0410-837c-bf9dd1be60d7