edx-solutions/edx-platform — pull request #269 by ziafazal (2014-10-15 13:02:28+00:00)
Title: ziafazal/api-fix-users-grade-complete-count: fixed count exceeding total...

@mattdrayer @dino-cikatic @dsego This would fix count exceeding total participants
and users_grade_average float conversion exception when average is None.