You could replace everything here with Django. There's nothing in here that supports migrations, deployment etc (Django can).
I've used React and Webpack and loath it, it's extremely opinionated, saturated with pure JS developers, has an enormous learning curve and load of gotchas.
Django also has API support and a wealth of add-ons for services like federated auth, ElasticSearch bindings, bindings for S3, Redis, discovery, Cassandra, NoSql, etc etc.
The architecture here is also really unscalable. There's nothing in here that can be horizontally scaled, and Jinja or Django + bootstrap is 10x faster for prototyping before you hire a dedicated dev to maintain a React nightmare.
Modules are not a feature of this app, they're a feature of the Python language. Putting that in the README is misleading IMO.