Fixes manifest-driven loading of clutter
cleans a little actor.py cruft
Adds supplies back into scenario manifest, makes docking paths into more general flight paths
Adds minor FlightPath changes, a (nonfunctional) undocking option for docking computers
Wipes universe.py to use it as a global field for multiple stations
Adds simple support for station merging
Adds a new robot friend in docking capsule; also an interesting actor-location bug
Fixes a small bug with searching empty stations
Minor fix for actor logging when changing stations
Fixes actor and actor-sprite positioning in a moving station
Fixes a bug where objects were being left in old stations and updated twice
Modules only go into a station's exterior objects list if they lack a station themselves, otherwise they ought to have their own update and draw methods.