Compute RTL every time it is needed.

The old code would compute the language direction once when the template
was loaded.

TNL-2269

Revert "i18n lon-capa problem explanation title"

Use publicly-accessible ecommerce URL root when constructing refund email

ECOM-1339 Branding API footer

This reverts commit 3e0342cb.

Ignore migrations in coverage reports

Parsing the ECOMMERCE_API_URL yields a URL root only accessible from within the VPC.

Serve branded footer JSON/HTML/CSS/JS from an API endpoint
in the branding app.  Refactor OpenEdX and EdX.org footer templates
to use the Python version of the API, ensuring that the API
values are consistent with the footer included in main.html.

Detailed changes:

* Added footer API end-point to the branding app.
* Footer API allows the language to be set with querystring parameters.
* Footer API allows showing/hiding of the OpenEdX logo using querystring parameters.
* Deprecate ENABLE_FOOTER_V3 in favor of the branding API configuration flag.
* Move no referrer script into main.html from the edx footer template.
* Rename rwd_header_footer.js to rwd_header.js
* Cache API responses.

Authors:
Awais Qureshi, Aamir Khan, Will Daly

ECOM-1590: added the min_grade as a requirements

Awais786/ecom 1494 deprecate midcourse code

[LTI Provider] Refactoring and clean-up

Move generic mobile API view decorators.

TNL-2223 Inline discussion jumps to the bottom of the page when threa…

Minor update to video_outline API.

Add "following" parameter to thread creation

This allows authors to follow the thread immediately upon creation.

MA-738 OAuth token exchange for session cookie

Continue to Payment button is not accessible

Fix documentation comment for enrollment API

Muhhshoaib/sol 794 generate detailed enrollment report

Add thread creation to discussion API

fix verification widget layout on dashboard

Merge hotfix from release to master

Escape JSON for User Profile

Updated shadow styling for Dashboard modal

TNL-2248

add explicit accessibility test

Also, fix the field-specific error format for all API endpoints.

This requires cs_comments_service commit fdf017c918.