[review-together] Modernize the review-together codebase.
Review Request #11087 — Created July 20, 2020 and submitted — Latest diff uploaded
This change updates the review-together extension, porting the JS side
to ES6, updating the Python code for Django 1.11/Python 3/Review Board
4.0 compatibility, and converting the CSS to use our new color
The visual appearance isn't super polished (many of the colors are a
little bit clashy with TogetherJS's icons), but I haven't changed
anything there. Updating to the latest TogetherJS and polishing the UI
might make for a good student project at some point.
Installed and activated the extension. Verified that the settings form
and frontend UI worked as expected.