Author: Mark Nelson
MDL-40054 mod_lesson: replaced 'grade view' add_to_log call with an event
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b6374c24ee365d9776062d5c215308ea6b049f06
http://github.com/moodle/moodle/commit/b6374c24ee365d9776062d5c215308ea6b049f06
+ 2.7 en [eventessayattemptviewed,mod_lesson]