Author: Rajesh Taneja
MDL-41283 report_participation: Updated report to use logging api
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ff6a853aad9858c607f93cb9bd283b6f587940b6
http://github.com/moodle/moodle/commit/ff6a853aad9858c607f93cb9bd283b6f587940b6
+ 2.7 en [nologreaderenabled,report_participation]