Git commits in Moodle 3.6.x by Jean-Michel Vedrine

commit 5f9d6e34a3fa4c39b1236be1fdbfebfc1be92581
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Tue, 19 Feb 2019 00:48:32 +0800
Tag:    v3.6.3

MDL-63905 qtype_multianswer: validate imported questions

commit 09fc929e1375cfba939dffe7c9d45c98760302a9
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Sun, 21 Oct 2018 00:29:10 +0800
Tag:    v3.6.0-beta

MDL-60897 qtype_multianswer: Invalid cloze-questions saved to db

commit 58b6b184b3a7e6d9c178186aa918216ab2bc43db
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Fri, 10 Aug 2018 00:31:36 +0800
Tag:    v3.6.4

MDL-62974 lesson: Suppress HTML font tags

commit a4ffdbf3f0ba8fdecf0115f81c2ce1971ceee1c1
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Thu, 21 Jun 2018 22:17:33 +0800
Tag:    v3.6.0-beta

MDL-62761 lesson: wrong deadlines on index with overrides