Author: Mihail Geshoski
MDL-35396 lesson: Fix detailed statistics display for essay questions
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8ac1820b57ed103e2aa3f54ac3b49ebb0aa8cd56
http://github.com/moodle/moodle/commit/8ac1820b57ed103e2aa3f54ac3b49ebb0aa8cd56
+ 3.7 en [essaynotgradedyet,mod_lesson]
+ 3.7 en [viewessayanswers,mod_lesson]