limit HTTP methods on other domains

Hi there! I've found out that also one of your subdomains still has HTTP TRACE enabled. This is similar to the issue described in #109054, except that it is for http://inside.gratipay.com. ``` curl -v -X TRACE http://inside.gratipay.com * Rebuilt URL to: http://inside.gratipay.com/ * Hostname was NOT found in DNS cache * Trying 107.21.92.176... * Connected to inside.gratipay.com (107.21.92.176) port 80 (#0) > TRACE / HTTP/1.1 > User-Agent: curl/7.35.0 > Host: inside.gratipay.com > Accept: */* > < HTTP/1.1 200 OK < Connection: close < Date: Thu, 18 Feb 2016 12:26:17 GMT * Server WSGIServer/0.1 Python/2.7.6 is not blacklisted < Server: WSGIServer/0.1 Python/2.7.6 < Content-Type: text/html; charset=UTF-8 < Via: 1.1 vegur < data... ```