Author: Ferran Recio
MDL-69270 contentbank: replace content with file
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c5a8469abb09056350f60f3f9f423db986361902
http://github.com/moodle/moodle/commit/c5a8469abb09056350f60f3f9f423db986361902
+ 4.0 en [eventcontentreplaced,core_contentbank]
+ 4.0 en [replacecontent,core_contentbank]