Author: Marina Glancy
MDL-55340 mod_feedback: export question labels
This was present in export in 3.0 but got lost during export
refactoring in 3.1
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5889858cc5237ab2303337f847616be70d0a8aab
http://github.com/moodle/moodle/commit/5889858cc5237ab2303337f847616be70d0a8aab
+ 4.0 en [nameandlabelformat,mod_feedback]