Git commits in Moodle 3.11.4 by Mark Nelson

commit 53a4d06a8d8d8faf75ad0e112899a7785f548456
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Mon, 28 Jun 2021 16:17:38 +0800
Tag:    v3.11.4

MDL-71439 core_grades: return a blank mustache template for letters


commit 6070bbb37bf1b6271ed2856ac9b1817ec1d37809
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 25 Jun 2021 18:23:16 +0800
Tag:    v3.11.4

MDL-71439 mod_forum: display user grade from web service


commit f13e3235c464014e44e9c4c117c568cd4fd22cd8
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Fri, 25 Jun 2021 15:29:09 +0800
Tag:    v3.11.4

MDL-71439 core_grades: return result of new method in web services


commit 641b5a27ab899007831e6cad7ede0e17355e634d
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Thu, 17 Jun 2021 17:30:11 +0800
Tag:    v3.11.4

MDL-71439 core_grades: fixed undefined class issues


commit ea996d378b46c32064127f9fc23a0e3a39260033
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Thu, 17 Jun 2021 17:25:21 +0800
Tag:    v3.11.4

MDL-71439 core_grades: remove returning null when not possible


commit 20b3b4c38da0401760c392a264a10340f507e203
Author: Mark Nelson <mdjnelson@gmail.com>
Date:   Thu, 17 Jun 2021 16:34:13 +0800
Tag:    v3.11.4

MDL-71439 core_grades: add new method 'get_formatted_grade_for_user'