WL-168 When redeeming a Registration Code in the shopping cart, the user should be redirect to the Registration Code Redemption page

improvements suggested by william

PLAT-280

PLAT-221

The variable name --- `dist` error
`dist` = {}  will cover `dist = grades.answer_distributions(course.id)`

[PLAT-217]

Move lms.lib.xblock into lms.djangoapps.lms_xblock in preparation add database backed configuration to it

TNL-735

I open this pull to support unicode ANALYTICS_DASHBOARD_NAME

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

TNL-649

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

Move modulestore config for tests to an importable location
Disable pylnt warning for lms imports in common tests
Refactor all testcases that loaded all xml courses
TE-610
TE-489