base.py

This module gets the ball rolling by defining paths and by creating a configuration file with default values if it doesn't exist. Manually deleting config.txt is Step 1 of three steps to cleaning up after creating a bunch of test trees during development. Step 2 is to manually delete the folders that the trees' *.tbd file and the trees' images directories are in. Step 3 is to open tbard.db in the SQLite command line interface and delete rows referencing the deleted trees from tbard.db's `family_tree` table.