Add basic fixture support for submissions
Add support for submission error responses
Use _.partial instead of Function.prototype.bind
Use 'data' instead of 'submission' for submission fixtures to be less ambiguous
Return the fixture for submission fixture helpers
Minor clean up in submit fixture tests
Moved test setup into beforeEach
Merge pull request #3 from praekelt/feature/issue-3-basic-submission-fixture-helpers

Basic submission fixture helpers.