Converted the crypto and compression plugins to core features, and
added the utility variables and functions to the Config class in
``config.py``. Added helper functions in PappySession class in
``pappy.py`` to enable the user to pass in an encrypted project archive.
Next moving to testing and debugging!
Cleaned up the huge mess I created, pushing back to catch everything up.
Redoing crypto plugin as main component instead of plugin.
Likely compressing existing project files on first crypto run,
then storing the encrypted archive blob in the project directory.
When pappy started again, it will see the encrypted blob, extract
files to working directory, do all of its work in that directory,
then exit the directory, and clean up all files. A lot of work, but
worth the end result!
