Create format_review_files
Create format review file uploader
Explicitly require carrierwave and minimagick
Install cocoon gem
Remove format review active model-related files

Format Review Files will be a nested attribute of Submission
Add new form for uploading format review files
Improve markup for upload format review files form
Git ignore files uploaded via the web interface
Pass on creating thumbnails

Since we can't predict filetype and isn't worth
development cost at this time.
Connect the format review files form to controller
Update the upload format review files styles
Update feature to match user interface
Add the first field for cocoon nested-fields the form is new
Update upload format review step
Test uploading multiple format reveiew files
Make the appropriate format review transitions