Haystack attempts to always ensure the index mapping is up-to-date.
There is a bug in this code (at least when using Elasticsearch 1.x) that
results in an invalid mapping comparison. Given that our mapping is
static, this feature is simply a waste of resources since we always
make three API calls to Elasticsearch for every search call.

This commit disables this mapping check/update feature when executing a
search query.

LEARNER-2188

LEARNER-2154

These fields aren't required, but give additional data to affiliates using the API.

LEARNER-1700

This will ultimately be used by the marketing site to retrieve program data without having to store a separate reference (e.g. UUID).

LEARNER-2053

EDUCATOR-882

Populate course run effort values from Drupal API

ECOM-5776

ECOM-5776

Django Compressor is still used by Publisher, so these settings are still needed.

ECOM-5776

The metadata refresh command should log the short code of the partner for which an access token is being retrieved instead of always logging the value of the partner_code argument.

ECOM-5776

LEARNER-1119

LEARNER-1887

This reverts commit bcbd1d4f.

LEARNER-1119

This reverts commit cda1efbe.

This reverts commit a90370b4.

Merge branches 'master' and 'vkaracic/LEARNER-1119' of https://github.com/edx/course-discovery into vkaracic/LEARNER-1119

LEARNER-1119

3.6.3 is tested against Django 1.11 and includes built-in, interactive API documentation. Sadly, the built-in documentation struggles with the URL patterns in this project and is only able to construct top-level entries (i.e., api, extensions, publisher). All the endpoints that should be underneath those are missing. This issue is documented in https://github.com/encode/django-rest-framework/issues/4984. Until it's resolved, we'll continue using django-rest-swagger.

The 3.6 release announcement is at http://www.django-rest-framework.org/topics/3.6-announcement. Extended release notes are at http://www.django-rest-framework.org/topics/release-notes/#36x-series.

LEARNER-1590