The official npm package for Font Awesome Free is now used instead of
the vendored styles. Previously we had been using v4.4.0, now we're
using v5.13.0.
We're now importing the Font Awesome SCSS modules instead of using the
minified CSS bundle. This integrates more cleanly into our build
system, and it lets us use their mixins directly in the future if we
need to.
The variable `fa-font-path` has been set to reference our font
directory, as instructed here:
https://fontawesome.com/how-to-use/on-the-web/using-with/sass#compile
The phishing detection page had been using a separate stylesheet from
the rest of MetaMask. This stylesheet (`app/fonts/index.css`) was just
responsible for importing all fonts.
The phishing page now uses the same stylesheet as the rest of MetaMask.
The old stylesheet has been removed, leaving us with one less thing we
need to maintain as fonts are changed. We may want to revisit this
later to optimize performance by reducing the size of this CSS bundle
to the minimal set of styles required, but the impact is tiny in
practice, and not especially important in this situation.
