Author: John Beedell
MDL-55911 Quiz: Accessibility, Label blanks in DD questions
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b5cbcc4dfb451bf1164c45af53ff5cadbd0941b1
http://github.com/moodle/moodle/commit/b5cbcc4dfb451bf1164c45af53ff5cadbd0941b1
+ 3.2 en [blank,qtype_ddimageortext]
+ 3.2 en [blank,qtype_ddwtos]