GitLab

 - Add rudimentary classes for reading MoxQuizz questions.
 - Add a very simple ask command. No scores or quiz game-play yet.
 - Refactor SQL models out into a separate file.
 - Make the code more Python 3 friendly.
 - PEP8 and pyflakes.

 * Uses sqlalchemy declarative schema for the log and saved URLs.
 * runbot now not using nohup. Will need to be daemonised somehow.
 * Refactored botcommon.py out of existence.
 * Now reads from a config file which can optionally be specified at the
   command line with --config option.
 * Prints usage with --help or if no config file is found.