edx/edx-platform — pull request #1655 by adampalay (2013-11-13 13:59:30+00:00)
Title: Adam/more granular grading transactions

Makes grading transactions more granular by loading each course section in a single transaction.

Manually manages transactions in grades.grade, grades.progress_summary, and courseware.views.progress

@cpennington
@ormsbee