Author: Jun Pataleta
MDL-76597 question: Add question version lang string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=58d350d53d78cdb099c868bf78459a2b2069a81c
http://github.com/moodle/moodle/commit/58d350d53d78cdb099c868bf78459a2b2069a81c
+ 4.0 en [question_version,core_question]