Author: Tim Hunt
MDL-64464 drag-drop qtypes: allow <span lang=".."> id draggables
This is for accessibility, so that screen readers can read the drag
items with correct pronunciation.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=096a5b9949af4a51beb3eb913c9ffa2bc17271d5
http://github.com/moodle/moodle/commit/096a5b9949af4a51beb3eb913c9ffa2bc17271d5
+ 3.7 en [formerror_disallowedtags,qtype_ddimageortext]