Author: Benjamin Walker
MDL-72133 report_log: Add fallback context display
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b08eaaa028969915d6dae6ab5c79e19ca888d2b4
http://github.com/moodle/moodle/commit/b08eaaa028969915d6dae6ab5c79e19ca888d2b4
+ 4.5 en [missingcontext,report_log]