Author: Jun Pataleta
MDL-68355 gradingform_guide: Improve lang strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=91d3e7a632f9a602a69db6269ae851f9eefed4f7
http://github.com/moodle/moodle/commit/91d3e7a632f9a602a69db6269ae851f9eefed4f7
+ 3.8 en [commentpickerforcriterion,gradingform_guide]
+ 3.8 en [informationforcriterion,gradingform_guide]
+ 3.8 en [remark_help,gradingform_guide]
+ 3.8 en [scoreforcriterion,gradingform_guide]
+ 3.8 en [score_help,gradingform_guide]