Embed webfonts in preview

[jenbennings]

We should attempt to embed web fonts in the template if possible. This means we can demonstrate font rendering in the browser, but also have a more reusable component for text waterfalls. Unless we rendered previews on the server—but I'm not really sure why we'd do that if the assets are available to us.

Future thinking

It would be cool if we could devise a way to handle multiple weights. For example:

We could make the fields ContentEditable too... Although I'm not really sure that would be of any real benefit.