Author: Tim Hunt
MDL-49368 qtypes match & multichice: cope with editing after attempt
Teachers should not radically edit a question after it has been
attempted. However, if they do, we should handle it gracefully, rather
than triggering PHP errors.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ce95661817e5d243b010eaca7aeadb54748e8d73
http://github.com/moodle/moodle/commit/ce95661817e5d243b010eaca7aeadb54748e8d73
+ 3.0 en [deletedchoice,qtype_match]
+ 3.0 en [deletedsubquestion,qtype_match]
+ 3.0 en [deletedchoice,qtype_multichoice]