Author: Damyon Wiese
MDL-49324 Grades: Use a progress bar when recalculating gradebook grades
http://git.moodle.org/gw?p=moodle.git;a=commit;h=30be6c846ae1c62e954d9d993ee4f830a7e1445a
http://github.com/moodle/moodle/commit/30be6c846ae1c62e954d9d993ee4f830a7e1445a
+ 3.1 en [gradesneedregrading,core_error]
+ 3.1 en [recalculatinggrades,core_grades]