Move google webfont link to templates from css @import

The @import broke on the built site, and this way the browser can start
the http request sooner.

Later it might be good to download the font into the repo, when an
actual intentional decision for the font face is made.
Clean up and cache static asset building
Implement the closure js compiler filter

Uses the google closure http api, which is a little annoying, but adds
no dependencies. Otherwise nodejs or something would be required to
build.