Author: Dan Poltawski
MDL-53449 mod_feedback: reponses page clean up and behat
http://git.moodle.org/gw?p=moodle.git;a=commit;h=9bb87baf18894b874450a29c348727e4d466ceb9
http://github.com/moodle/moodle/commit/9bb87baf18894b874450a29c348727e4d466ceb9
+ 3.1 en [anonymous_entries,mod_feedback]
+ 3.1 en [non_anonymous_entries,mod_feedback]
+ 3.1 en [non_respondents_students,mod_feedback]