add simple help-modal-test
Content experiments update

comments from Anant
Merge pull request #5295 from edx/adam/add-simple-help-modal-test

add simple help-modal-test
Merge pull request #5318 from edx/markhoeber-doc936

Content experiments update
Add the 'meta' column from the UserProfile table to the CSV download

add special case logic to get the 'meta' field into the downloaded CSV

wip