Author: Amaia Anabitarte
MDL-85553 course: Change Status column name in Overview
http://git.moodle.org/gw?p=moodle.git;a=commit;h=31ad09f72f877e8797862232b8e8296f933e11f3
http://github.com/moodle/moodle/commit/31ad09f72f877e8797862232b8e8296f933e11f3
+ 5.1 en [completion_status,core_completion]