Updated dashboard UI for empty list of courses and programs

ECOM-3199

The problem Grade Report (from the Data Downloads page) must show the problems in the order they occur within the course.

-Adressed all comments

Updated dashboard UI for empty list of courses and programs

Resolves conflicts between reverts of pattern library test pages and multi-site comprehensive theming, and the re-introduction of pattern library test pages. Fixes a pipeline rendering test which relied on other tests updating assets. The test now ensures that static assets are available before running.

* tests for dragging
* icon location reference updates
* pattern library usage

s/our/your

This reverts commit 628843f6.

-Updated method "course_key_from_string_or_404" to raise message too.
-Wrote tests for "course_key_from_string_or_404" when exception message is given.
-Modified existing methods to use "ddt.data".
-Used Splunk logs to find exectly where we were getting "Invalid Key Error"
-Updated Views where we were getting "Invalid Key Error" in splunk logs.
-Wrote tests for those View End points where we were getting "Invalid Key Error"

Updated dashboard UI for empty list of courses and programs

- Updated django-oauth2-provider libraries
- Added test ensuring issued access tokens have the basic scopes needed to get user info

ECOM-4197

When a user tries to purchase a verified certificate for the first
time or upgrade to verified, if the ecommerce checkout is enabled
redirect the user to the ecommerce checkout basket.

The verification workflow assumes that all verified courses will have a
price. Free verified course modes cause a 404 when the user attempts to
enroll or upgrade.

This reverts commit 266f593d.

ECOM-4024

remove unnecessary parentheses

change css properties for mixins bi-aap in login/register page

change css properties for mixins bi-app in about course page

change css properties for mixins bi-app in the dashboard

change css properties for mixins bi-app in help template

change css properties for mixins bi-app in the home page

change css properties for mixins bi-app in jobs, press and media pages

remove the extra spaces

This reverts commit 4c83a2f0.

This reverts commit a796b563.

Conflicts:
	lms/envs/common.py
	openedx/core/djangoapps/theming/models.py
	pavelib/assets.py
	pavelib/paver_tests/test_assets.py

This setting is necessary to avoid django-storages applying a security token to S3 URLs.

ECOM-4081