fix gettext

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@20405 35612d4c-9d10-0410-837c-bf9dd1be60d7
fix + apply patch from ddurieux


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@20406 35612d4c-9d10-0410-837c-bf9dd1be60d7