Logging improvements

- Log messages slightly improved
- Log output now uses the project name as the logger name rather than "root" for project-specific log entries
Removed unnecessary project name substitutions from logging messages
Made project loggers children of the "games" logger
Merge pull request #7 from zachdavis/loggingimprovements

LGTM.

Praying auto-merge doesn't blow up my history. :'(