Author: Mark Johnson
MDL-81714 grades: Add regrading progress indicator to grade reports
http://git.moodle.org/gw?p=moodle.git;a=commit;h=10de32939759240a228f673b86f7f999afd9d4a1
http://github.com/moodle/moodle/commit/10de32939759240a228f673b86f7f999afd9d4a1
+ 5.0 en [recalculatinggradesadhoc,core_grades]