Correction update_0831_084.php

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@20076 35612d4c-9d10-0410-837c-bf9dd1be60d7
proposal to improve log, for old record

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@20077 35612d4c-9d10-0410-837c-bf9dd1be60d7
improve getYesNo check


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@20078 35612d4c-9d10-0410-837c-bf9dd1be60d7