[IDEA] Use rpi LEDs as status LEDs for moOde itself

[romain]

@Tim Curtisyou'll probably have to change something in worker.php when mount status is enabled ; rc.local by default is started after all the other services and executes worker.php lastly. If LEDs are disabled in favour of mount status, worker.php, as it works actually, switches the LEDs off after mount status is started and you have to wait for about one minute to see the LEDs on again.

For testing, I've delayed the execution of mount status after rc-local.service in the systemd unit file but it didn't change anything.