Git commits in Moodle 3.4.4 by Alex

commit 39a586d2fa1caf19197c0c6c98806b8e762ec501
Author: Alex <awhitlat@msudenver.edu>
Date:   Tue, 17 Apr 2018 10:56:10 +0800
Tag:    v3.4.4

MDL-57600 format: Fix spelling errors