Lowered the timeout for the webfont loader to a second to reduce wait time on slow connections.

Refs #255.
Removed hiding the main content while loading the webfonts to let browsers decide.

This is mostly to work around the effects described in #255.
Decreased bottom padding of copy banner slightly to be less asymmetrical.
Use Font Awesome CDN instead of locally hosted fonts.

Refs #232 and #255.