Add migrations to license django application

Retrieve and assign course software licenses

Fix CR showanswer template

Remove annoying print statements

Make small corrections to UT pages and announcement

Return only username on OpenID provider requests.

Corrected comments on OpenID temporal fix

Per update from CS50 team, their client will break if not given addresses.

UT press release and related updates

Temporarily return username also as the email and fullname fields of
the response using OpenID's simple registration extension.

reset_problem in capa_module should always return dicts not strings

this is for the master branch (versus cms-master)

Make chem preview more robust

- give the preview div an id, use that to look it up instead of dancing around in the DOM

Feature/victor/capa ajax

Toggle shouldn't follow anchor

choicegroup should only process choices belonging to its input_id

Feature alex crystallography mitx

- I'm starting to vaguely understand js variable scope and closures.  Long way to go though :)

* still call the callback when skipping duplicate file.  This updates the completed flags, and so the overall "we're done" callback fires properly.

more removal of data("id") in favor of attr("data-id")