Author: Mathew May
MDL-76143 gradebook: Add search into graderreport
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d80fb6ce2cbb9e7f7633f1512e570f612147ed61
http://github.com/moodle/moodle/commit/d80fb6ce2cbb9e7f7633f1512e570f612147ed61
+ 4.2 en [showingxofy,gradereport_grader]
+ 4.2 en [viewallresults,gradereport_grader]
+ 4.2 en [viewresultsuser,gradereport_grader]
+ 4.2 en [noresultsfor,core_grades]
+ 4.2 en [usermatchedon,core_grades]