[ENH] Add some perfdata to graph elapsed time

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@47296 b456876b-0849-0410-b77d-98878d47e9d5
[BP/trunk] Tiki-monitor.php is fine for 11.x

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@47297 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/11.x 47257 to 47297

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@47298 b456876b-0849-0410-b77d-98878d47e9d5