Remove documentation files moved to edx-documentation repo

Readme for documentation directory

Fixed spacing of RTL icon in discussion

Reduce complexity in run_quality.

Remove admin files deprecated in Django 1.4

Abstract asset methods into own interface class

Remove more pep8 violations

Implement shim for mobile video events.

then impl the read ones as NotImplementedError placeholders on xml modulestore
PLAT-70

This PR addresses the following issues:

1) All requests return a 200 OK unless there is an authorization failure. This is deliberate in case the secret key is compromised.
2) Push all of the nasty logic necessary to generate compatible video events into the LMS instead of trying to do that mapping on the mobile devices.
3) Stop using the deprecated "action" field in the segment.io event. According to their support team this field should not be used anymore and is just around for backwards compatibility reasons.

Fixes: AN-3818

Studio: Removing older/deprecated style rules

fix click event for actual target

Updates to Demographics Display

TNL-138

Delete lms/static/admin resources as they are no longer needed
for the admin page as of Django 1.4

Moved two files that were referenced elsewhere:
lms/static/admin/js/jquery.min.js -> lms/static/js/admin/jquery.min.js
lms/static/admin/js/urlify.js -> lms/static/js/admin/urlify.js

Ignore errors during cleanup of course export command.

Add warning about sensitive info in course export

DOC-977

Merging latest updates to release

DOC-977/DOC-991

fix the link in the button on the receipt page

Merging Hotfix candidate/2014 10 30 as per release process

Update wording per Doc

This reverts commit 471abb8c.

courseware header bar should not overflow shopping cart button TNL-722

Correct script exit status

Verified Receipt page layout fixes

When s3fs cannot be accessed replaced with osfs

Fix PLAT-191

TE-567

Commenting out flaky string input test case