upload shit

Note: I switched to Gunicorn at some point because Bjoern was somehow annoying. Don't use run.py, use

```gunicorn -b localhost:5000 fileHost:app```

Dependencies:

```passlib argon2_cffi flask gunicorn```

This application makes use of the `secrets` module (a cryptographically strong version of `random`) from the standard library, which is only available in Python 3.6+. If you really can't be bothered use the latest version of python3, or just don't want cryptographically strong random character filenames/prefixes for some reason, you can directly replace all instances of `secrets` with `random`.