Because PythonAnywhere does not use the django test server this can not be done simply.
The file /var/www/wsgi.py
is currently set to reload the web server on any modification. Having that file open in a browser tab and hitting save on it would result in a slightly faster server reload.
Another option is to use a bookmarklet, which you could add to your bookmarks toolbar:
https://www.pythonanywhere.com/help/#id_reload_webapp_bookmarklet