Newer versions of django handle application/json in a more correct way by having the payload in the request body rather than a url parameter to the HTTP post request.

see https://docs.djangoproject.com/en/dev/releases/1.5/section #non-form-data-in-http-requests

We can therefore remove the:
    -    params = urllib.urlencode({'data': data})

As we should not be sending a body with a url as the content rather we can correctly send the application/json as the body and pass the data directly.
     
     - conn.request("POST", "http://%s/ClientPost/" % server, params, headers)
     + conn.request("POST", "http://%s/ClientPost/" % server, data, headers)

Compatibility has been added to the error-report-web so that we can handle this transition but we should deprecate it in future versions.