ECOM-4013

This will leverage the nose attrib plugin to allow us
to break tests apart on our build system to run
in parallel on separate nodes.

Modified how the per object permissions are enforced in the CCX REST APIs

ECOM-3419

CCX REST APIs
OAUTH2 authorization for CCX APIs
- oauth2 authorization required for ccx list.
- Course-instructor permission for ccx api endpoint
- Protection for detail view too.

Tests for CCX REST APIs and OAUTH2 authorization

This reverts commit 46df4545, reversing
changes made to 039e6cdf.

ECOM-3384

ECOM-3419

Format responses as a JSON dict containing an error_code and a
developer_message.  user_message is not necessary, as these are API
level errors, not seen by end users.

MA-1900

The permissions class now supports non-GET requests.

ECOM-2893

- The permission now checks the correct request attribute (GET instead of data).
- The Credit API view test has been updated to check for the positive access instead of just denial.

 ECOM-3096

* Catalog results are now paginated
* Implements the new namespaced pagination described at
  https://openedx.atlassian.net/wiki/pages/viewpage.action?pageId=47481813
* API level code returns pythonic business objects
* View layer performs serialize at the view layer
* Convert views to use DRF generic views
* Removes an unintentional authentication decorator that caused
  the detail endpoint to return a 401 for anonymous users

MA-1724

- API built atop Django REST Framework
- Added support for OAuth 2.0 and session authentication
- Added permissions around eligibility data

ECOM-2609

Also remove useless docstrings where they were added to keep pylint
quiet.

MA-1416

Created a TypedFileUploadParser that validates the mimetype and then
takes the content and puts it on request.FILES['file'].  Subclasses the
existing FileUploadParser.

Use namedtuple in IMAGE_TYPES as per style guide:
https://github.com/edx/edx-platform/wiki/Python-Guidelines#classes-vs-dictionaries

* Fix paver violations to stablize edx-lint update
* Parens, Line2Long
* Fix missing docstrings
* Fix PEP8 issues
* Address PR feedback (thanks @nedbat!)

TNL-3442

* Upgrade edx-submissions
* Upgrade edx-ora2
* Upgrade edx-val
* Upgrade edx-proctoring
* Update all edx-platform code that depends on DRF, including:
  - auth_exchange
  - cors_csrf
  - embargo
  - enrollment
  - util
  - commerce
  - course_structure
  - discussion_api
  - mobile_api
  - notifier_api
  - teams
  - credit
  - profile_images
  - user_api
  - lib/api (OAuth2 and pagination)

* Upgrade edx-submissions
* Upgrade edx-ora2
* Upgrade edx-val
* Upgrade edx-proctoring
* Update all edx-platform code that depends on DRF, including:
  - auth_exchange
  - cors_csrf
  - embargo
  - enrollment
  - util
  - commerce
  - course_structure
  - discussion_api
  - mobile_api
  - notifier_api
  - teams
  - credit
  - profile_images
  - user_api
  - lib/api (OAuth2 and pagination)

TNL-3281

TNL-3202

TNL-3014

Add tests for search

Add text_search to TeamsListView

Add reindex command line tool for course teams

Add Search Pagination and update comments

Move paginate_search_results to common library

Adds a read-only mode to the discussion module which disables any
controls for updating the discussion (votes, follows, replies,
etc). This mode is enabled for users who are not a member of the team,
and are also not moderators, admins, or community TAs.

Authors:
  - Daniel Friedman
  - Ben McMorran
  - Peter Fogg

TNL-1892

The comments service rejects whitespace-only content for certain
strings, so the discussion API should also reject such content.

IsAuthenticatedOrDebug hides potential issues with API client code that is run in local environments and later deployed to production where authentication fails.

XCOM-193