Author: Mihail Geshoski
MDL-73645 grades: Update breadcrumb nodes
http://git.moodle.org/gw?p=moodle.git;a=commit;h=724578a008a603f34036a1e9bcefb05900601088
http://github.com/moodle/moodle/commit/724578a008a603f34036a1e9bcefb05900601088
+ 4.0 en [deletescale,core_grades]
+ 4.0 en [deleteuserkey,core_userkey]