Author: Shamim Rezaie
MDL-61514 Quiz: Display unavailable tags when editing random questions
When editing a random question, the form will display the tags that the random question
is configured to get questions from even if those tags do not exist anymore.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c907987844f4e4207fa8a6bfc2d4d1e27b0b1735
http://github.com/moodle/moodle/commit/c907987844f4e4207fa8a6bfc2d4d1e27b0b1735
+ 3.5 en [randomfromunavailabletag,mod_quiz]