Moved code for loading google searchbox out of <head>
Use latest GA JS
Defer loading of fonts

- Defering loading of fonts until after the page has loaded, using the
  typekit webfontloader (https://github.com/typekit/webfontloader). Moved all
  font-face CSS declarations into a separate CSS file, which the webfontloader
  will load only after the DOM has finished loading. There is a minute flash of
  unstyled content, but it's almost unnoticeable.
Merge branch 'hotfix/performance'