Merge release to master

Hotfix/2015 05 29

This reverts commit 16a248b9.

This reverts commit c75526ea.

Merging hotfix-2015-05-29 from release to master

Hotfix/2015 05 29

Update translations (autogenerated message)

Use a MongoReplicaSetClient for Split modulestore, but only
if replicaSet config is set.

Merge release into master

Add fake Arabic testing language

Fix credit requirement "criteria" name

patch/2015-05-29

ECOM-1339 minor CSS tweaks for the footer. It now extends the full wi…

SOL-839 label cursor and receipt internationalization

The CreditRequirement "configuration" field was renamed in Django
code without updating the migration.  This commit adds a second
migration to delete the incorrect field and add a new field.
The credit feature is currently disabled in production, so
the model isn't currently used by application code.

Scroll to new textbook and make input active, on textbook create

calculator incompatible aria role attribute

Fix bug when student scoring error occurs with no message.

Compute RTL every time it is needed.

XCOM-375

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

TNL-2251

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

TNL-2269

ECOM-1339 minor CSS tweaks for the footer. It now extends the full width of the browser and fixes issues with link hover states.

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

AC-107