Git commits in Moodle 3.6.7 by Nathan Nguyen

commit 9b6d7fc1e0d6b4cb816389cdc13fd971cf76979c
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Thu, 12 Sep 2019 10:10:13 +0800
Tag:    v3.6.7

MDL-46978 core_grades: preserve category total visibility


commit 734cd75ed3822cc9194ffacd1f0ff1551989b13b
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Thu, 12 Sep 2019 08:26:24 +0800
Tag:    v3.6.7

MDL-64917 filepicker: change event dispatch