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=189810269ac7642a344c11c5563c664b60d017c0
http://github.com/moodle/moodle/commit/189810269ac7642a344c11c5563c664b60d017c0
+ 3.9 en [nameandlabelformat,mod_feedback]