edx/edx-platform — pull request #1334 by ichuang (2013-10-12 13:58:09+00:00)
Title: Fix/ichuang/instructor dashboard grades for assignment

Dumping of grades for a specific assignment is an important feature for residential use of edx-platform.

The instructor dashboard (what has been renamed to become the "legacy" version) has a bug in the code which provides this feature. If a student's grades are missing entries, the dump will hit an exception due to an IndexError. Instead, the student missing grades for that assignment should be skipped. This PR makes that fix.