This file is an adapter between **connect-fonts** and our app. This could just be part of `lib/configuration.js`.

Providing config/fonts.json is nice, but it can be picked up with the normal `CONFIG_FILES` mechanism, etc. We might want this so that you can have config/fonts-prod.json which matches l10n-prod.json.

Unless the design is for this font configuration to always have config for all locales and then the i18n sub-system enabels/disables locales. This is actually probably better, since there is one place to enable and disable locales. We just need to make adding fonts and font config part of the checklist for adding a new locale.

CC @mathjazz so he knows about this work.