Add confirmation step for refund Approve/Deny buttons.

XCOM-344

Refund analytics

Adds a receiver of the post_refund signal which emits a business intelligence event if Segment is enabled.

Added Support for Processing Refunds

The Refund model includes approve and deny methods. The deny method updates the states of the Refund and RefundLine. The approve method issues payment credit and revokes fulfillment of the purchased items(s).

XCOM-338

Fix issue removing all refund actions after a successfully processed refund

Updated Coverage Usage

Updated CSRF cookie name in JS

This was missed when the CSRF_COOKIE_NAME setting was changed. The settings changes have been moved to base.py so that they work across all environments, and we avoid the need to modify JS solely for local usage.

JS Cleanup

- Minor copy update
- Corrected variable declaration
- Added variable to cache DOM lookup

This instantiation of coverage ensures coverage is loaded before any code being tested. This eliminates the need for to instruct coverage to omit numerous files, and ensures coverage reporting is accurate.

Removed Unnecessary Requirements

XCOM-340

Clean up refund list view

Updated ecommerce API requirement from 0.4.0 to 1.0.0

Added documentation for acceptance tests

Created a new processors package

Add refund detail view

Adds a refund detail view to Oscar which displays information about a single refund and allows a support team member to perform operations on that refund. Also provides UI elements on the refund list view which can be used to approve or deny a refund. Credit and revocation are coupled as far as the UI is concerned.

Added separate acceptance test README to the repo and added instructions in the primary README to consult it for acceptance test instructions

This reorganization should keep the files smaller and a bit more maintainable.

XCOM-338

Added can_approve and can_deny properties to Refund model

These properties can be used to determine if the Refund can be approved or denied.

XCOM-226

Update DRF to latest version.

Changelog can be found here: http://www.django-rest-framework.org/topics/release-notes/#31x-series

Refund List View

Oscar now displays the full names of users on the "Orders" page

- Added full_name field to user model
- Updated the JWT auth to set user's full name from token

* Added refund list view
* Added refund table to order and user detail views

XCOM-298

Added refund creation endpoint

This endpoint can be used by LMS to create new refunds for orders/lines related to a specific course.

XCOM-223

Updated serve command

For local usage with devstack, we should be listening on all IP addresses, not just 127.0.0.1.

Updated bok-choy

Customize session cookie name when running locally.