Git commits in Moodle 3.3.4 by Vervoort, Claude

commit c76ac89f80bc2dd02f8ebb18d080a2bbeb20e6cb
Author: Vervoort, Claude <claude.vervoort@cengage.com>
Date:   Thu, 28 Sep 2017 01:22:43 +0800
Tag:    v3.3.4

MDL-60253 lti: also consider securetoolurl for URL match