Git commits in Moodle 3.0.7 by John Beedell

commit 7c882f43892932ad26e692f23f6f5f45049fc740
Author: John Beedell <john.beedell@open.ac.uk>
Date:   Thu, 03 Nov 2016 17:11:15 +0800
Tag:    v3.0.7

MDL-54986 Quiz: Disable add button for quiz with attempts

commit 4296f2b9da88753685a17e3f4d71eef83bd378d2
Author: John Beedell <john.beedell@open.ac.uk>
Date:   Thu, 08 Sep 2016 23:17:07 +0800
Tag:    v3.0.7

MDL-55911 Quiz: Accessibility, Label blanks in DD questions