fix validation for a change

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@23219 35612d4c-9d10-0410-837c-bf9dd1be60d7
harmonization display profil for central and helpdesk

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@23220 35612d4c-9d10-0410-837c-bf9dd1be60d7