Combine Google Font stylesheets, save HTTP request

Google Fonts supports loading multiple fonts in the same stylesheet
request by delimiting the fonts with pipe (|) characters. Combine Open
Sans and Lora into a single stylesheet request to remove an HTTP request
to fonts.googleapis.com.

You can open the stylesheet in your browser to confirm the styles are all
there: http://fonts.googleapis.com/css?family=Open+Sans:400italic,400,300,700|Lora:400,700,400italic