* updating vendor files
* updating class syntax (to new FA-based classes) for all UI elements
* correcting broken tests

TE-532

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.

account for third party auth.

Change third party auth login failure code to a 401, to detect authentication
success with no linked account.

If already authenticated, redirect immediately to the dashboard.

Use "Location" header correctly for 302 redirects from student views.

Add utility functions for simulating a running third-party auth pipeline.

Add a utility function for checking whether third party auth is enabled.

Respect default values sent by the server

Reset the correct URLs module to fix test failures.

Fix third party auth to reconfigure the registry on test cleanup.

Add Python APIs for account/profile information to user_api
Updating profile page to have social linking

Authors: Renzo Lucioni, Alasdair Swan, Stephen Sanchez, Will Daly

Also, removed the client-side analytics for logging in.
Ensures that analytics are collected for third-party-auth logins.
Fixed failing tests related to third-party-auth.

Move the open edx logo inside the div

Adding a bunch of placeholder views.

indenting.

Making some styles work against LMS sass.

Adding back the old edx footer and associated icons, with a feature flag.

LMS-6622

third_party_auth contains a working settings mechanism, the start of the provider interface + 3 implementations (Google, Mozilla Persona, LinkedIn), and a stub for the auth pipeline. Modified existing lms settings files to use but deactivate the module.