Add a configuration file for holding your GUID at ~/.ptracker

This makes it so I don't have to keep looking it up
Add project_id to the list of options that can go in our config file

Also set up the logging module in the main entry point
Clean up the stories command to use common code and the parser
Add activities task

This currently doesn't really parse all of the activities info very well
it just downloads it all and dumps it. Eventually I'll get around
to parsing it all out