Convert more font declarations to local Gotham.
Support strong and em.
Automatically built.

commit cea0a4dd7c7f751c4a48c3f4c22a4efae5073ec8
Author: Rick Hawkins <rick@alchemydes.com>
Date:   Sat Dec 6 12:47:14 2014 -0800

    Support strong and em.

commit f0ffa8831b8801538f46e687cf8835feba040fd9
Author: Rick Hawkins <rick@alchemydes.com>
Date:   Sat Dec 6 12:43:34 2014 -0800

    Convert more font declarations to local Gotham.