Author: Tim Hunt
MDL-50228 quiz: improve overall feedback section of the form
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1bad9be67afffef28361c0b3e557feaadd8e66bf
http://github.com/moodle/moodle/commit/1bad9be67afffef28361c0b3e557feaadd8e66bf
+ 3.0 en [initialnumfeedbacks,mod_quiz]
+ 3.0 en [initialnumfeedbacks_desc,mod_quiz]