Git commits in Moodle 3.5.3 by Michaël Marinetti

commit 3446e3a257b881e8f1a50f35d2bcc1747fd2041b
Author: Michaël Marinetti <github@marinetti.fr>
Date:   Wed, 12 Sep 2018 15:16:38 +0800
Tag:    v3.5.3

MDL-62294 lessphp: Fix for PHP 7.2 compatibility