Update to Babel 7.x
Review Request #11214 — Created Oct. 9, 2020 and submitted — Latest diff uploaded
This change updates us to use Babel 7.x for our JavaScript
transpilation. Aside from requiring a newer version of
babel-plugin-dedent, the only changes necessary are updates for the
new package names.
- Ran build-media.py successfully.
- Ran Review Board's js-tests.