[0.84] try to fix for #4464


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.84-bugfixes@21986 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.84] Display of crontask fixed #4598


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.84-bugfixes@21987 35612d4c-9d10-0410-837c-bf9dd1be60d7