Only display updates course tool when updates exist.

Created new embargo check api

Revert "Bump problem builder to v2.6.9."

LEARNER-1523
LEARNER-1524

Assuring that courses without updates cannot see the updates link from the home page and that the update message does not throw an error upon loading from a direct URL without any updates. Added test to assure this behavior and fixed up welcome message tests.

Bump problem builder to v2.6.9.

Add cert task fire on whitelist append

Add feature flag to disable email address changes.

PLAT-1229 Support for JS tests in Docker devstack

Fix sysadmin csv download as unicode

Add support for CommonsChunkPlugin for Webpack.

Remove mock-django dependency

Upgrade django-statici18n to 1.4.0

Set COPYRIGHT_YEAR dynamically

ENT-447 Add ability to hide auth warnings for enterprise context.

Fixing quality issue with recent merge.

Introduce a course_tool plugin entry point and convert Updates, Bookmarks and Reviews into entry points.

Put the verification-sock html on the page all the time so that we can easily experiment on it with optimizely

Introduce a course_tool plugin entry point and migrate the updates, bookmarks and reviews tools into plugins.

- PLAT-1572 upgrade to official Django 1.11 support version

When a user comes in through an sso provider and arrives at the login
or registration page, there is a warning message that comes up to indicate
that the user has to take an action to sign in and register and thus
link their sso account to their edx account. However, it is confusing,
particularly for the enterpise context. This diff disables these messages
from being rendered if these pages are being shown in an enterprise context.

Allow lower- and mixed-case country default values on registration form

Put the verification-sock html on the page all the time so that we can easily experiment on it with optimizely

LEARNER-1485: Adding a reviews page and link from the course tool bar

[LEARNER-437] Reflect discount on the Program About Page (WL)

Adding a reviews page to the course and updating the reviews module on the course about page. Removed the existing coursetalk implementation and put it in a fragment, removed the tests as well. Added configuration settings to specify the reviews template as well as the reviews provider. This is all protected by a waffle flag.

[LEARNER-1367] Move Program Marketing page from private themes repo to edx platform repo

[LEARNER-311] Enable a purchase button on the Program page - platform (WL)

Revert "Test out DRF 3.6"

This reverts commit f8d3f889.