For video module, don't use Mako unnecessarily

ECOM-1177: Removed the session variable on pay_and_verify view

ECOM-1155 fix the date diff issue.

Adding hints for otherwise quiet quality shard steps.

Add pointer-events: none for fa-lock and fa-eye

Enable content libraries by default

Exfoliate flaky studio home test. (SOL-430)

Content Libraries Import/Export

Studio template updates

Addresses SOL-290.

Cross-domain CSRF cookies

Updates to account and profile APIs based on arch council feedback

Reorganized course_structures app

SOL-258 Removing preview and content type from search list for sequence ...

Celery requires all tasks to be in a tasks module. Also, the task has been updated to use default values if the the course structure generator encounters a block without the graded or format fields.

Combine the changes of SOL-199 and SOL-221

Multi-commit history:
- hide drag functionality for entrance exam section.
- hide entrance exam subsection elements e.g. delete, drag, name etc.
- show unit/verticals expanded in case of entrance exam
- modify code in order to allow user to update entrance exam score from UI.
- write down unit tests.
- write down Jasmine tests.
- add bok-choy test
- updated bok-choy test
- internationalize string
- repositioned sequential block creatori
- SOL-221 (entrance exam message)
- SOL-199 LMS Part (show entrance exam content) and hide the course navigation bar.
- redirect the view in case of entrance exam.
- update code structure as per suggestions
- write down unit tests
- fix pep8
- instead of hiding the exam requirement message, now also showing the exam the completion message (success state).
- write down unit test to show exam completion message.
- Update code as per review suggestions
- update doc string
- addressed review suggestions
- change sequential message text
- css adjustments
- added new css class for entrance exam score in studio
- added Jasmine test for remaning coverage
- sequential message should appear under the context of entrance exam subsection.
- updated text in CMS and LMS as per suggestions.
- added unit text to insure sequential message should not be present in other chapters rather then entrance exam.
- skip setter if empty prerequisite course list
- exclude logic from xblock_info.js that is specifically related to entrance exam.
- added js tests and updated code as per suggestions
- added tests
- addressed several PR issues
- Several small fixes (style, refactoring)
- Fixed score update issue
- added some more unit tests.
- code suggested changes.
- addressed PR feedback

return proper 404 for assets of some invalid course from split modulesto...

PLAT-456

Upgrade PDF.js library from v0.8.1243 -> v1.0.907

Filter inline discussion topics and threads in the forums by access

MA-272 Updated analytics shim for mobile video events

Add an endpoint to exchange OAuth access tokens

TNL-650

Conflicts:
	lms/djangoapps/django_comment_client/base/views.py
	lms/djangoapps/django_comment_client/tests/test_utils.py
	lms/djangoapps/django_comment_client/tests/utils.py
	lms/djangoapps/django_comment_client/utils.py

Shim has been updated to handle currents builds of the android and iOS
apps which are not returning the correct semantics/events. Shim now
includes the seek event.

This allows the holder of a third-party access token (e.g. from Google
or Facebook) to get a first-party access token for the edX account
linked to the given access token.

Switch to api directory.