LMS-2121

Introduction of the Microsite feature which allows for limited multi-tenant branding on a subdomain basis, e.g. foo.edx.org and bar.edx.org

fix errorenous logic when running a microsite that could reside in a hosting environment with a marketing site in front of it

pep8/pylint fixes

address PR feedback, remove underscore from test hostname

more pep8/pylint cleanup. Skip test_microsites test, it works on localdev, not on Jenkins. Need to talk with QA team

manually add Ned's single-to-double quote fix

change aws.py runtimes so that the microsite_dir that is read from configuration is changed to a python path

Conflicts:
	lms/templates/help_modal.html

fixes template errors

keep tos untranslated

formatting fixes

Remove unused course_filter page

removes university_profile urls and templates

removes all university_profile views

remove news from templates/index

Adjust the now-defunct landing page so that it doesn't render much
of the edX-specific marketing info (social links, press releases,
university partners, etc.) if a theme is enabled.

Additionally, if the Stanford theme is enabled, add in some school-
specific language and adjust the video modal to play a Stanford one.

LH: 381, 382, 383

[#154]

media kit - added in new tab/window behavior for download links, revised edX name styling on homepage cta, and provided more context on logo download text

[#41872203]

[# 41872203]

[#40805397]

[#39472239]

- use js instead of django to do the redirection

* for more context, see https://basecamp.com/1892446/projects/631155-devops/messages/4719963-strange-caching

* also replace the external-auth-related popping up of the signup form with jquery.
Presumably it takes care of the browser specific stuff.