Rebrand the branch.io text me the app landing page to reflect edX's style.

LEARNER-2730

This change creates a new lms/cms endpoint which accepts unauthenticated
requests to securely create zendesk tickets. This allows javascript code to
create tickets without exposing ZENDESK_OAUTH_ACCESS_TOKEN

EDUCATOR-1889

- Certificates management commands updates
- Moving reverse calls in tests into setUp from class definition
- Import shuffling
- Consolidating cryptograhpy version to 1.9

Add explicit 'lms.djangoapps' prefix to all commerce imports, as another
commerce Django app exists at openedx.core.djangoapps.commerce

The Entitlement API will allow for GET, POST, DELETE(Revoke), and
variations of these methods of managing and retrieving data about
Learner Entitlements.
[LEARNER-2661]

- Remove usage of django.urls.patterns
- Change urls tuples to lists
- Make all string view names callables
- This is the first of several urls updates for LMS; a work in progress

LEARNER-2307

LEARNER-2555

FEDX-375

LEARNER-2017

LEARNER-1855

LEARNER-1890

Default ORA2 storage settings use AWS, so no change required to aws envs.

Refactoring: Use format with named variables

LEARNER-1523
LEARNER-1524

LEARNER-1112

EDUCATOR-229

The read_cached_programs switch was used to control the release of changes for reading programs exclusively from the cache. With those changes stable, the switch is no longer necessary.

LEARNER-382

This makes it possible to refer to multiple book from a single app.

This also means that Open edX branches will be able to pass bok-choy
tests (at least if the books have already been built.)

LEARNER-394

TNL-6674

LEARNER-39

LEARNER-39

This change adds the URL configuration and Django view required
to implement a program marketing page. It is left to theme builders
to implement a template that fulfills their own UX requirements.

WL-766