Author: Amaia Anabitarte
MDL-68314 core_contentbank: Course content bank backup and restore
http://git.moodle.org/gw?p=moodle.git;a=commit;h=3449e22683dffc32ab6de44670f163a3dc1b3630
http://github.com/moodle/moodle/commit/3449e22683dffc32ab6de44670f163a3dc1b3630
+ 3.9 en [configgeneralcontentbankcontent,core_backup]
+ 3.9 en [configrestorecontentbankcontent,core_backup]
+ 3.9 en [generalcontentbankcontent,core_backup]
+ 3.9 en [rootsettingcontentbankcontent,core_backup]