Update edx-lint to the version that checks if tearDown uses super.

Convert a number of tearDown methods into addCleanup.

Remove some unneeded tearDown methods: no need to call patch.stopall if
none of them were started with patch.start.

Show ordinary receipt unless the student is in the payment flow.

Remove submission of verification attempt in shopping cart, since it's no longer needed with the new payment/verification flow.

Wrap send email operation in try/except to avoid rolling back the transaction once a user has paid.

The existing pattern of using `override_settings(MODULESTORE=...)` prevented
us from having more than one layer of subclassing in modulestore tests.

In a structure like:

    @override_settings(MODULESTORE=store_a)
    class BaseTestCase(ModuleStoreTestCase):
        def setUp(self):
            # use store

    @override_settings(MODULESTORE=store_b)
    class ChildTestCase(BaseTestCase):
        def setUp(self):
            # use store

In this case, the store actions performed in `BaseTestCase` on behalf of
`ChildTestCase` would still use `store_a`, even though the `ChildTestCase`
had specified to use `store_b`. This is because the `override_settings`
decorator would be the innermost wrapper around the `BaseTestCase.setUp` method,
no matter what `ChildTestCase` does.

To remedy this, we move the call to `override_settings` into the
`ModuleStoreTestCase.setUp` method, and use a cleanup to remove the override.
Subclasses can just defined the `MODULESTORE` class attribute to specify which
modulestore to use _for the entire `setUp` chain_.

[PLAT-419]

Removes old payment and verification endpoints, views, templates, and tests, making the new split flow the default. The SEPARATE_VERIFICATION_FROM_PAYMENT feature flag is also removed.

Allow disabling of experiment

when enrolling a student from a PaidCourseRegistration or a RegistrationCode redemption, then note the CourseEnrollment id in the respective tables

add retire method to order class

Adding new event and test

pylint and comments

Code review changes.

Fix test and pylint.

pylint error.

Updating the test to verify the signal is fired.

Test for all analytics events

Import pylint error.

Pylint error

Ex-74 Registration Code redemption

fix the translation issues

added a check if a user is already registered in a course. Changed the messages

added course depth=0 and removed pep8 violations

Ex-72-added additional billing information

Added a new CSV file in the instructor dashboard sales tab to download all the order sales separated from the invoice sales

fix path to image

updated the failed unit tests and add some minor tweaks in the Shoppingcart.scss

Ex-78 New UI In receipt page

EX-73 Purchasers can buy a course on behalf of a different student

WL-78 updated the receipt page UI.

Wl-72 updated Billing Information UI and removed the Order Address fields

WL-71 Remove Purchase Type Buttons from UI

WL-71 Updated minor UI issues and updated test cases

WL-78 updated the enrollment links in the receipt page

made changes in Order generated sales csv in Instructor Dashboard.
 The total_registration_codes and total_used_codes
  were not correctly stored in the csv file.

1) The total_registration_codes were not filtered with
 course_id.
2) The total_used_codes that a user had redeemed
 were not correctly included in the CSV.

added a fix in the courseware view to let the users visit the courseware if they have enrolled in the course by clicking on the enrollment link

rebase and resolved conflicts with master

WL-97 Bulk Registration Email Confirmation
Below is the commit summary.
- Make email text bold as per requirement.
- Improve email template quality and reorder points.
- Add text in billing details page : "if no additional billing details are populated the payment confirmation will be sent to the user making the purchase"
- Update text on receipt page "You have successfully purchase 3 course registration codes"

WL-100 fixed the bug on the edit/add coupon and set course price.
Ajax requests were duplicating in each callback. fixed this issue by creating the manual ajax request rather than the Lean Modal Ajax requests

allow for better White Label branding in shopping cart purchase emails

fix up typos and text

fix goof

fix

fix

incorporated model changes as suggested by Jason.

updated order sales csv

updated test cases for CourseRegCodeItem model and csv for the order generated sales

updated the migrations history

fixed the lms acceptance tests

Be sure to check for multiple types

address PR feedback

PR feedback

PR feedback

pep8 fix

Make donations configurable

Added donation button to dashboard

Generalize merchant defined data for payment processor

Add tax-deductible messaging to the confirmation email and receipt pages.
Update receipt page to make the course URL optional

course ids.

now handles cases where the order has both a PaidCourseRegistration
and a CertificateItem

add ability to inspect a cart for the existence of a particular type of item, e.g. PaidCourseRegistration. Only show the 'Shopping Cart' button if there's a PaidCourseRegistration in it.

[LMS-2757]

This commit adds the non-courseware lms/djangoapps and lms/lib.

These keys are now objects with a limited interface, and the particular
internal representation is managed by the data storage layer (the
modulestore).

For the LMS, there should be no outward-facing changes to the system.
The keys are, for now, a change to internal representation only. For
Studio, the new serialized form of the keys is used in urls, to allow
for further migration in the future.

Co-Author: Andy Armstrong <andya@edx.org>
Co-Author: Christina Roberts <christina@edx.org>
Co-Author: David Baumgold <db@edx.org>
Co-Author: Diana Huang <dkh@edx.org>
Co-Author: Don Mitchell <dmitchell@edx.org>
Co-Author: Julia Hansbrough <julia@edx.org>
Co-Author: Nimisha Asthagiri <nasthagiri@edx.org>
Co-Author: Sarina Canelake <sarina@edx.org>

[LMS-2370]

LMS-2518

Support incremental conversion of events from the old API to the new, in order to ensure the new system is working, enrollment events have been modified to make use of the new API.