Use 404 status code for Fallback routes

[Martii]

• Useful for determining what's potentially broken during testing
• Automatic editor white-space cleanup

[Martii]

This:

http://localhost:8080/groupies

GET /groupies HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:29.0) Gecko/20100101 Firefox/29.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

HTTP/1.1 404 Not Found
X-Powered-By: Express
Content-Type: text/html; charset=utf-8
Set-Cookie: connect.sid=*clipped*; Path=/; HttpOnly
Vary: Accept-Encoding
Content-Encoding: gzip
Date: Sat, 31 May 2014 10:12:14 GMT
Connection: keep-alive
Transfer-Encoding: chunked

instead of:

https://openuserjs.org/groupies

GET /groupies HTTP/1.1
Host: openuserjs.org
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:29.0) Gecko/20100101 Firefox/29.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Cookie: connect.sid=*clipped*
Connection: keep-alive

HTTP/1.1 200 OK
X-Powered-By: Express
Strict-Transport-Security: max-age=8640000; includeSubDomains
Content-Type: text/html; charset=utf-8
Vary: Accept-Encoding
Content-Encoding: gzip
Date: Sat, 31 May 2014 10:19:01 GMT
Connection: keep-alive
Transfer-Encoding: chunked