Git commits in Moodle 3.6.x by Toni Barberà Melià

commit c759ae5d55881a6405e861afbce69fcc2c874def
Author: Toni Barberà Melià <toni@moodle.com>
Date:   Tue, 18 Sep 2018 20:58:27 +0800
Tag:    v3.6.0-beta

MDL-60514 tasks: added new config parameter. changes in cron execution