Captcha fix

Attempt #2 at fixing captcha's.  You might want to test this a good amount, I think it's working okay now, although it's kind of a mess.  Also I haven't fixed it in reporting, but starting threads and replying seems to work.

The gist of it is we need to post a request to google with the capture and the challenge token, get the response token back and send that in with the 4chan reply.