Author: Jonathan Champ
MDL-29572 Grade Import: Avoid creating invalid temporary rows; Provide feedback on error
http://git.moodle.org/gw?p=moodle.git;a=commit;h=338fd396b7f1c2b925e6219ba790c76ff025b490
http://github.com/moodle/moodle/commit/338fd396b7f1c2b925e6219ba790c76ff025b490
+ 2.6 en [errorsettinggrade,core_grades]
+ 2.6 en [gradeimportfailed,core_grades]
+ 2.6 en [usermappingerror,core_grades]
+ 2.6 en [usermappingerrorusernotfound,core_grades]
+ 2.6 en [usermappingerrorcurrentgroup,core_grades]