Git commits in Moodle 3.3.8 by Jake Dallimore

commit b39379cb98fc9cba5b69a9d9c7e9b32cb9eacd80
Author: Jake Dallimore <jake@moodle.com>
Date:   Fri, 24 Aug 2018 13:08:51 +0800
Tag:    v3.3.8

weekly release 3.3.7+

commit a21f18e947b2fb51835ad6c3076cb3f588b94377
Author: Jake Dallimore <jake@moodle.com>
Date:   Mon, 30 Jul 2018 14:14:54 +0800
Tag:    v3.3.8

MDL-62947 core_form: fix remote code execution exploit in QuickForms

commit 9ab746af278e1409ebd6e460d45aa1291f19e402
Author: Jake Dallimore <jake@moodle.com>
Date:   Thu, 26 Jul 2018 09:56:00 +0800
Tag:    v3.3.8

MDL-62947 mod_feedback: fix feedback so it correctly uses forms API