Git commits in Moodle 3.6.6 by Victor Deniz Falcon

commit b791a215ff9b5354b1ece4f8052e3276bf73ad4a
Author: Victor Deniz Falcon <victor@moodle.com>
Date:   Tue, 30 Jul 2019 23:01:38 +0800
Tag:    v3.6.6

MDL-66272 core_renderer: fix favicon method PHPDoc