Possible fix for CORS/cookie issue.

I noticed that the cookie was indeed being set by the POST request. However, that cookie was
essentially ignored in the subsequent requests.

I looked for places to interrupt it, could I just stop after the POST and not execute any redirects.
That did not appear to be an option due to HTTP/XHR spec. After a bit of searching I came up with
this link: http://stackoverflow.com/a/14462615 which seems to solve the issue. Mentioned here:
https://api.jquery.com/jQuery.ajax/
Added CORS required parameter to conf
Merge pull request #21 from bgruening/cors

Fixes for CORS