Description:
------------
The header response on the status page is malformed; the content-type is outputted incorrectly.

Test script:
---------------
#!/usr/bin/python
from StringIO import StringIO
from flup.client.fcgi_app import FCGIApp
from pprint import pprint
import urllib2

def start_response(status, headers):
    pass

if __name__ == '__main__':
    app = FCGIApp(connect=('localhost', 9000), filterEnviron=False)

    env = {
        'QUERY_STRING': 'html',
        'REQUEST_METHOD': 'GET',
        'SCRIPT_FILENAME': '/status',
        'SCRIPT_NAME': '/status',
        'wsgi.input': StringIO(),
        'wsgi.errors': StringIO()
    }

    result = app(environ=env, start_response=start_response)

Expected result:
----------------
X-Powered-By: PHP/5.3.3-1ubuntu9pre1~lucid
Content-type: application/jsonrequest

{"accepted conn":50,"pool":"www","process manager":"dynamic","idle processes":2,"active processes":0,"total processes":2}

Actual result:
--------------
X-Powered-By: PHP/5.3.3-1ubuntu9pre1~lucid
application/jsonrequest
Content-type: text/html

{"accepted conn":50,"pool":"www","process manager":"dynamic","idle processes":2,"active processes":0,"total processes":2}