actually put the post in the xml param where we expecting it.  also, throw the errors so we know in whats going on in resque

JSON::Pure::Generator::State fix when using resque.  huge thanks to this post: http://blog.ethanvizitei.com/2010/11/json-pure-ruins-my-morning.html

Many JS improvements, moved a few things in view.js to stream.js, moved the clearForm plugin from view.js to rails.js (where we actually use it), refactored view.js and wrote specs

now you can not invite yourself.  we have a bug as send_contact_request_to was taken out but Invitation still used it