* Implementing support for multiple credit provider keys
* Plan on storing keys as list and not dict
* Adding tests for serializer and signature code
* adding more tests
* tweaking a comment
* Quality fixes
* Breaking out some login into a helper function
- Added support for Unicode characters when creating the signature
- Using <textarea> for form data to support newline characters
- Generating form with jQuery instead of relying on existing DOM element
- Removed duplicated credit request code
- Corrected spaing on dashboard
- Enabled functionality by default
Dashboard cleanup
-- Cleaned styles
-- Added wrapper class to use for hiding the actions
-- Cleaned JS toggling of error container
-- Corrected dashboard and receipt text
ECOM-2172
* Add end-point for initiating a request for credit from a provider.
* Add an end-point for a provider to update the status of a request (approved / denied).
