Created a bunch of basic models; YAML file for loading dummy data; shell script for resetting DB and reloading dummy data.

Basic models are all there, some with missing / stubbed methods. Will
expand as necessary.

dummy2.yaml is a fixture used for loading dummy data. Be careful
changing it.

reset.sh is a script that drops all tables, recreates them, and loads
dummy2.yaml — basically a clean reset of the DB.

Also included some random maybe useful notes in notes.txt.

…also First!