This change tells Webpack (for those using it) that the config file
used should be tracked as a dependency and that the CSS should be
re-compiled if that config file changes.
It's careful to make sure the config file is loaded fresh every single
time to avoid weird caching issues.
I thought this was a good idea at first but in practice it feels wrong.
Not totally opposed to it, but I couldn't really find any other sites
that apply a button's hover state on focus for example.
