Git commits in Moodle 3.4.0 by Charles Fulton

commit 6dede51557ab96d0c233529602702b7d3f8caf24
Author: Charles Fulton <fultonc@lafayette.edu>
Date:   Mon, 24 Jul 2017 22:49:58 +0800
Tag:    v3.4.0-beta

MDL-59492 block_myoverview: handle course visibility style