Author: Eiz Eddin Al Katrib
MDL-37361 completion: Enabled overriding activity completion status
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a39918daae3506830d49d86b4f0fc9be203d2eab
http://github.com/moodle/moodle/commit/a39918daae3506830d49d86b4f0fc9be203d2eab
+ 3.4 en [areyousureoverridecompletion,core_completion]
+ 3.4 en [completion-n-override,core_completion]
+ 3.4 en [completion-y-override,core_completion]
+ 3.4 en [course:overridecompletion,core_role]