When provided, this setting appends tpa_hint=<value> to the `next` URL provided for /login and /register page URLs, which bypasses the Open edX Login/Register page with an an automatic redirection to the TPA login/register URL.

This allows the already implemented tpa_hint feature to be automatically added to login, registration, and enrolment URLs generated throughout the platform.

Avoids auto-appending the tpa_hint parameter when the request is already in the TPA pipeline, to prevent infinite redirect loops, and adds tests to verify this behaviour.

ECOM-6463

This reverts commit bc418c47.

ECOM-6463

ECOM-6140

ECOM-5968

Show verification expiration message on learner dashboard and allow them to reverify if expiration is X days away.
ECOM-2979

ECOM-4641

Please note that this is a squshed commit and the work of:
Symbolist, macdiesel, nedbat, doctoryes, muzaffaryousaf and muhammad-ammar

PR #8930

* Add verification deadline model.
* Populate verification deadlines from course modes table.
* Update student dashboard to use verification deadlines.
* Update pay-and-verify view to use verification deadlines.
* Simplify Django admin for course modes and add validation.
* Add verification deadline to Django admin for course modes.
* Add UI for when the upgrade deadline is missed in the pay-and-verify flow.

* Add a new cookie for user information
* Make marketing cookie names configurable.
* Handle URL reversal when URLs don't exist (in Studio)
* Move cookie code from student/helpers.py into its own module.

Handle the case in which a student reverifies after the verification
deadline has passed.  This will display the user's status as "verified"
on the dashboard even if they technically missed the deadline.

Makes logistration available at /login and /register as well as /accounts/login/ and /accounts/register/. In addition:

- Adds support for redirect URLs in third party auth for combined login/registration page
- Adds support for external auth on the combined login/registration page
- Removes old login and registration acceptance tests
- Adds deprecation warnings to old login and register views
- Moves third party auth util to student_account
- Adds exception for microsites (theming)

Fix all the 3rd party auth scenarios.

Update pipeline to preserve parameters.

Updating tests

Revert "If feature flag is enabled, replace the old login/registration pages with the new combined login/registration page."

This reverts commit f40447b3.

Conflicts:
	lms/urls.py

Revert "Add support for external auth on the combined login/registration page"

This reverts commit 98875339.

Conflicts:
	lms/templates/courseware/mktg_course_about.html
	lms/urls.py

Add support for redirect URLs in third party auth for combined login/registration page

Remove old login/registration acceptance tests

Add deprecation warnings to old login and register views

Move third party auth util to student_account

Add exception for microsites

Set marketing site logged in cookie from third party auth.