The diffviewer.forms.UploadDiffForm and reviews.forms.UploadDiffForm

were really out of date with current (Django 1.6) Django forms and our

documentation standards. The create() method on both was taking in

arguments that were already known by the form and did not verify that

the form was valid before attempting to create the models.
These issues have all been addressed and unit tests updated.

Ran unit tests.