Hide status warnings from disabled devices

On the main page, if you have "Status Warnings and Notifications" box, it will show warnings/notifications for devices that were disabled and there's no way to get rid of them short of deleting the device. We tend to leave old devices around for historic purposes.

One can fix this by adding "'hide_disabled' => TRUE" to the end of a line in html/includes/print/status.inc.php, see attached diff with a few character change.