Change EcommerceService's is_enabled to accept User instead of request

. And change the verification link in the sidebar to redirect to new basket if the EcommerceService is enabled.

ORA2 version update

Add the UI Toolkit to edx-platform

TNL-4217 – Initialize preview once for an input for the first time

UITK-75

Fix flaky condition that's showing up in firefox 42.

Remove executable bit from test file  TE-1235

Bok choy XSS changes

Wait for numerical selection to load before continuing.

Merge release 2016-03-22 back to master 

Revert "Upgrade underscore.string.min.js."

fix typo on testing.rst page

TNL-4272

This reverts commit e5c7fdda.

Unfortunately this change broke bundling on sandboxes, so reverting
it so that master isn't left in a bad state.

TNL-4214: Add safe template linter

Mark test as flaky TNL-4272

Release Candidate rc/2016-03-22

Fix improper escaping.

Add the providers information in the email.

ECOM-2931

Changes include:
- Fix code review comments
- Add comments
- Rename variables and files

Builds: empty xunit file as a function.

Delete face_upload and responsive-carousel.

Escape full names

Override field data within the XBlock runtime

Escape full names

To prevent XSS attacks, we now properly escape any string containing
the user's fullname. Enumerated by searching webview.py for "fullname",
and "git grep"-ing any occurrences. This also exposed some unused strings,
which I deleted for clarity.