Added Ajax for content submissions

Just remembered that we needed this and quickly wrote up a little ajax function for pulling the data from the form and submitting via a PUT.

Not 100% if the URL is what is needed, but I just copied what you had in that e-mail to me where you said "here's a sample http request"; it's easy enough to change though, if it's wrong.  

Also, once you check and see if this is what you wanted, we can add some kind of callback in the success function that lights up something on the screen saying "Content has been submitted" or whatever.