Adds a basic `setup.cfg` file with configurations for flake8 and pylama,
fixes some basic issues with essentially every file including:
* Many, many, whitespace line cleanups
* Several unused variables and imports
* Missing coding and shabang lines
* Minor style fixes to more closely align with PEP8
* Turn `print` into function calls for Python 2/3 compat
* A few minor bugs
* Things like using an undefined `i` in `stream_limiter_ban_email.py`
