Git commits in Moodle 3.7.x by Nathan Nguyen

commit 9cab0bb4658e8c2ae3cf8f01ce7c1b5953a412b1
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Thu, 12 Sep 2019 10:10:13 +0800
Tag:    v3.7.3

MDL-46978 core_grades: preserve category total visibility


commit d540a0ae0b605d69eeeb7a9c9e8908ea4821b35d
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Thu, 12 Sep 2019 08:26:24 +0800
Tag:    v3.7.3

MDL-64917 filepicker: change event dispatch


commit 4ffedd37976ea1c11e16c0082a422f69d91818c2
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Mon, 24 Jun 2019 14:19:44 +0800
Tag:    v3.7.2

MDL-65555 mod_lesson: fix group override backup and restore


commit c923621ec0f9537976d223504d102b2b8bb98d5f
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Mon, 24 Jun 2019 13:49:44 +0800
Tag:    v3.7.2

MDL-65555 mod_quiz: fix group override backup and restore


commit cebfb23fb1e922408b428353e00a1701580ef611
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Fri, 15 Feb 2019 13:20:14 +0800
Tag:    v3.7.0-beta

MDL-63263 tool_recyclebin: Apply automated backup setting


commit 9432553b1ce8e09c26c59e5b6c0375ec64ddc028
Author: Nathan Nguyen <nathannguyen@catalyst-au.net>
Date:   Fri, 15 Feb 2019 12:15:22 +0800
Tag:    v3.7.0-beta

MDL-61537 assignfeedback_editpdf: Rotate PDF page