Git commits in Moodle 3.7.7 by Tim Hunt

commit 82258882da0b8902d379501928f5676915edcfff
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 19 May 2020 05:55:50 +0800
Tag:    v3.7.7

MDL-68733 quiz editing: behat test for altering random question tags

commit db233ce7e2166c80a60d0898c57ac2056136ca71
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 19 May 2020 04:50:43 +0800
Tag:    v3.7.7

MDL-68733 question behat: question tag generator and use in quiz test

commit 045d650ae3ebddd98ef7490c1506ccb0f3921895
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 19 May 2020 00:31:43 +0800
Tag:    v3.7.7

MDL-68760 timezones: add string for new timezone America/Nuuk

commit 890e60c709e5f79dbea06e49b0a520e8e3a76259
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Mon, 18 May 2020 23:51:17 +0800
Tag:    v3.7.7

MDL-68760 string tests: make test_timezone_lang_strings message helpful