Author: Mark Nelson
MDL-41101 mod_assign: replaced 'view' add_to_log call for the submission status page with an event
http://git.moodle.org/gw?p=moodle.git;a=commit;h=cf2d7bfb4921755dd1f47565e5989929785d8d19
http://github.com/moodle/moodle/commit/cf2d7bfb4921755dd1f47565e5989929785d8d19
+ 2.7 en [eventsubmissionstatusviewed,mod_assign]