Author: Rajesh Taneja
MDL-39955 completion: Added course_module_completion_updated event
Conflicts:
lib/tests/completionlib_advanced_test.php
http://git.moodle.org/gw?p=moodle.git;a=commit;h=137d94f3354fa1a9a24433535e31a3bd5e8e2d83
http://github.com/moodle/moodle/commit/137d94f3354fa1a9a24433535e31a3bd5e8e2d83
+ 2.6 en [eventcoursemodulecompletionupdated,core_completion]