Developing a RIA with Django - what technology stack?
using web browser as your client platform?
I need to develop a web application with the following requirements:

Desktop like UI on the client side
Application deployment
Scalability (i.e. distributing the service on multiple servers)

What I thought of so far (as I love Python but haven't done much web development yet):

Django
Fabric (think I've read somewhere it's suited for this)

What I'm missing is:

How to create rich clients (probably need some javascript libraries for that)?
How to distribute the service?