Advertise content-language as English; #953
Advertise content-language as English; #953

Chrome is seeing /for/ as Indonesian(?). I'd rather not use en-US
because the site is U.S.-centric enough as it is. In local testing this
simple content-language header seems to be enough to prevent that.

bountysource/www.gittip.com,bountysource/www.gittip.com,bountysource/www.gittip.com,bountysource/www.gittip.com