How to move from Django to REST-API/Thin Client?
If I understand what you're trying to do, you might be looking for something like jQuery. It's a subtle JS framework that will make it easier to talk to your Django API, especially using Ajax and JSON.
We are thinking to move away from Django and separate the backend and frontend.
The backend is straight forward as I have done it plenty of times by exposing it as a Python RESTful API.
Whats new to me is the thin client part.
Theoretically I could just write HTML and plain javascript to talk to the API. 
Is there a macro-framework that would help me to achieve that? Beside AngularJS, what other thin client frameworks could I utilise without reinventing the wheel?