Author: Michael Aherne
MDL-52702 plagiarism: Improvements to base plugin class
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5e43eea080228c86370fb19ae4e767497243d5e4
http://github.com/moodle/moodle/commit/5e43eea080228c86370fb19ae4e767497243d5e4
+ 3.1 en [taskplagiarismcron,core_admin]