lbondaryk/PlayerProto — pull request #137 by mlippert (2013-12-18 15:35:47+00:00)
Title: Removed the code that was renaming the student submission key property t...

@seannives, here's the client change removing the rename of key to submission.

The name change was to support the correctness engine which has now been changed to expect a 'key' property not a 'submission' property for multiple choice.