[ENH] Make tiki-check.php results available for monitoring software like Nagios/Icinga/Shinken


git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@50803 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Make Nagios check not fail in tiki-check.php standalone mode


git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@50804 b456876b-0849-0410-b77d-98878d47e9d5