edx/edx-ora2 — pull request #302 by ormsbee (2014-05-01 13:19:58+00:00)
Title: WIP: Make peer assessment an optional step.

This also creates the AssessmentWorkflowStep model to track all steps for new workflows. Some problems with it now:

* a lot of broken tests
* some display oddities on the peer step during (peer, self) workflows
* have not tested to see if there are concurrency issues with step
model creation under load.

@stephensanchez