This project also made me switch from python( django) + sql to js/mongodb. Now this stack is my favorite.
Once you switch from django, you'll never look back because the way it makes you write HTML, it's like shoving two languages in your project instead of one (Python and JS) because Python can't do anything on the browser side.
So it's like to make use of Django for a production site, and this applies to other python web frameworks, you have to not only know Python but even Javascript [as there will be some logic inside the JS forms, inputs and stuff that requires processing before it's sent to server].
It's a general deficiency of web frameworks in particular, regardless of the language they were written in (except for JS frameworks obviously): Rails, CakePHP, Tomcat, ....