I performed some transition from django pure template solution to more javascript oriented.

- my server was running on raspberry PI, now heavy responses are returned via JSON, I think REST-like data. Which makes me offload burden to clients

- javascript makes the page more responsive. Parts can be loaded via separate calls, and it divides something that would be otherwise a monolith into subsequent small calls

- In my experience nearly all simple binary decisions "use only X", and "use only Y" solutions are bad