Sources:

- http://www.tornadoweb.org/en/stable/index.html
- http://tornadokevinlee.readthedocs.io/en/latest/guide/structure.html
- https://stackoverflow.com/questions/18354389/how-to-handle-mime-type-in-tornado
- https://tornado-sqlalchemy.readthedocs.io/en/latest/
- https://github.com/tornadoweb/tornado/blob/master/demos/blog/blog.py