Git commits in Moodle 3.4.5 by Tim Hunt

commit cfc4393aa689c277a27b9a040ff7dcbdac4e41dd
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 10 Jul 2018 01:37:45 +0800
Tag:    v3.4.5

MDL-62880 qtype_ddwtos: drop support for legacy import format


commit b05acb6b1012f901c1610d6e62a292be37a9b203
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Thu, 05 Jul 2018 23:59:45 +0800
Tag:    v3.4.5

MDL-62811 question bank: rendering shouldn't load individual questions


commit cf3f82bd181a1c1c61da341eb74e0544c574e42f
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Fri, 22 Jun 2018 17:45:56 +0800
Tag:    v3.4.5

MDL-62781 question/privacy: fix tests with CodeRunner is installed


commit e997551349c72026017b26c79ae20e7826f650a7
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Thu, 21 Jun 2018 19:55:43 +0800
Tag:    v3.4.5

MDL-62769 quiz statistics: graph should show all, not last, variant


commit 3b5086f5107186762f3383159d619bdd69257c35
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Sat, 11 Oct 2014 00:58:30 +0800
Tag:    v3.4.5

MDL-45851 restore: random questions must always be created