Bok-Choy CMS Video Editor Tests
Fix messaging for professional ed under auto-registration
Add tests that verify Studio can still render with bad HTML content.
Provide course outline template with start date
Studio: adding rendering/styling of course start date on outline view
Keeps in sync with edx-analytics-dashboard
Merge pull request #4897 from edx/ahodges/doc/twitter

Keeps in sync with edx-analytics-dashboard
Merge pull request #4886 from edx/will/ecom-122

Fix messaging for professional ed under auto-registration
This confirms the data api upgrade
Added shared browser topic

To include in all guides
Merge pull request #4871 from edx/jhelbert/api-upgrade-check

This confirms the data api upgrade
Studio: revising alignment of in-context edit buttons in outline view
Fix: inadvertent scroll when loading the instructor's extensions tab

(The div with id "view-extensions" conflicts with the tab JS which sets location.hash to "view-x" in order to track the current tab)
Unit tests for bugs in IDDE API, including LMS-6563
Fix: an individual extended due date must not precede the normal due date LMS-6563
Fix: API allowed an individual due date extension on units with no due date
Fix: 500 response if indiv. due date deleted after normal due date was deleted
Fix: Display error when attempting to reset nonexistent due date extension
Add myself to AUTHORS, update changelog
Merge pull request #4496 from edx/ammar/bok-choy-cms-video-editor-tests

Bok-Choy CMS Video Editor Tests