Git commits in Moodle 3.4.6 by Marcus Fabriczy

commit 35f6db92326311bb78c9795843aa75dc9e9c7ca4
Author: Marcus Fabriczy <marcus.fabriczy@blackboard.com>
Date:   Thu, 27 Sep 2018 20:03:30 +0800
Tag:    v3.4.6

MDL-62738: editor_tinymce: Fix call stack size bug on Safari