Git commits in Moodle 3.5.5 by Tim Hunt

commit 7f5479a1425aa4ec32c567e3e5ace3802da097dc
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 01 Mar 2019 19:12:40 +0800
Tag:    v3.5.5

MDL-64981 dml tests: pgsql_native_recordset_testcase port number

commit 99f29e25806cdf05d48ff1b67b0acf35428b5e7f
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 08 Feb 2019 23:52:44 +0800
Tag:    v3.5.5

MDL-64242 qtype_essay: more efficient query in restore code

commit 11cf3ecc56ab9e55cffbfce55d8aa75369a7bbb7
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Mon, 21 Jan 2019 21:17:56 +0800
Tag:    v3.5.5

MDL-64521 grouplib: reduce memory use in groups_get_all_groups

commit 61319327b164f209bff84758fcd1568b145ca678
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Sat, 19 Jan 2019 02:00:42 +0800
Tag:    v3.5.5

MDL-64590 questions: wrong comments shown in the state history table

commit 591a7952c2779f31a15491fad31f6d674883856e
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 18 Jan 2019 23:58:11 +0800
Tag:    v3.5.5

MDL-64591 User tours: don't show during redirects & other bad times

commit 901c95587f28783162554d301a338520fad06b4c
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Sat, 12 Jan 2019 02:35:05 +0800
Tag:    v3.5.5

MDL-63870 quiz: new preview should abandon, not finish, current attempt

commit 8c6a45020e847eeb2098881f608b1166a59ff4e3
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 14 Dec 2018 00:04:28 +0800
Tag:    v3.5.5

MDL-61441 accesslib: get_users_by_capability groups perf improvement

commit 8b1bf65b22cba6867229064366114bade19690c6
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 27 Nov 2018 01:09:17 +0800
Tag:    v3.5.5

MDL-64465 qtypes: fix incorrect context passed to format_string

commit 6f60c7a6f24086e5f59ad34d0cd575602f3a2996
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 23 Nov 2018 23:49:31 +0800
Tag:    v3.5.5

MDL-64464 drag-drop qtypes: allow <span lang=".."> id draggables