Added the email sending functionality to a form on the bottom of the post page.  I have to clarify how much email processing Dean wants the apllication to do, but this works (I think, I have to test if it ACTUALLY works on GAE, but it appears to work in dev).  I have set up an XML file for email text and the basic structure of how to read it can be copied again in the cod if needed.  I realised today that i need a better way to deal with the template_values because so many of them end up being global, but, another day.
Ah, so I didn't realise that the send-from address had to be a regerstered admin, so I'll have to put some thought into how to make that work.  Anyways, thsi version works on GAE, and sends emails from Dean's enail address for now.