Diaspora

Added statebased test to diaspora list. Added graceful-ish end to statebased dialogue

Added Simple StateBasedDialogue system with a very brief test case. Ignoring .idea files

Copied working version of command-line Preliminator, added placeholder for state-based dialogue machine.

Cleanup of names, applied some encapsulation, added safe exit function for incomplete dialogue catalogue options.

Initial work for new dialogue manager (collection) called 'Diaspora'