Author: David Monllao
MDL-59063 analytics: Finished courses can't be used for prediction
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fefa34120a6e333019b2548ca464f7d35e8eab45
http://github.com/moodle/moodle/commit/fefa34120a6e333019b2548ca464f7d35e8eab45
+ 3.4 en [coursealreadyfinished,core]