exclude the config file so only the config dist file is there.
optimizations & debugging

Allow application to be run in debug mode DEBUG value in config.py

Document and cleanup the dumptree function of the Containers model
slightly.

Add debug logging of request paramaters

Add debug logging of cache keys purged

Rewrote cache purging to make it faster, more accurate, and easier to
maintain.

Updated cache key used by application to match URI's 100%