Author: Mark Johnson
MDL-78823 core: Add new events when enabling and disabling qbank plugins
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b7b932a3c1f2702aef0b45266e97edd4d8f7e8c1
http://github.com/moodle/moodle/commit/b7b932a3c1f2702aef0b45266e97edd4d8f7e8c1
+ 4.3 en [eventqbankdisabled,core_question]
+ 4.3 en [eventqbankenabled,core_question]