Author: Amaia Anabitarte
MDL-68526 core_contentbank: Delete content when a course is deleted
Or when a course category is moved/deleted
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f2a9bb6edb37eb88c3e50d98e1a761908cbc1eee
http://github.com/moodle/moodle/commit/f2a9bb6edb37eb88c3e50d98e1a761908cbc1eee
+ 3.9 en [contentbank,core_contentbank]
+ 3.9 en [contentsmoved,core_contentbank]
+ 3.9 en [errordeletingcontentfromcategory,core_contentbank]