You don't need a browser extension to accomplish auto refreshes. Take a look at https://github.com/tjwalch/django-livereload-server.
I posted a more extensive answer about this at https://stackoverflow.com/a/36961244/2950621
It works by using a manage.py command (server) to monitor your .js and other static files. The server sends a signal to the browser via websockets. There is some client-side code injected on every page. The injected code responds to the signal and refresh the browser.