Author: Mathew May
MDL-75274 gradereport_grader: Column collapsing
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1a1939ac29f26ba2972f47fcab5f0d7b0cbc43dc
http://github.com/moodle/moodle/commit/1a1939ac29f26ba2972f47fcab5f0d7b0cbc43dc
+ 4.2 en [collapsedcolumns,gradereport_grader]
+ 4.2 en [reopencolumn,gradereport_grader]
+ 4.2 en [searchcollapsedcolumns,core_grades]