Added fists, fixed current navigation and added new navigation, bugfixes

- Added fists. Default weapon. You always have them. You cannot go into
a fight unarmed
- Fixed stupid bug when confronted by an enemy and the game doesn't know
the commands to navigate instead of saying "Sorry, but you are face to
face with that enemy. Fight that first and maybe I'll let you go"
- Added Result object. Can pass back more detail than a simple boolean.
- Fixed message on Pistol to not state that it is the basic weapon ever.
- Fixed up pts -> HP