Added areas to the holodeck and map in general.  Bugfix for janitorborg soap.

Holodeck rooms:
* Party room: Has party alarms and snacks.  The floor is ugly as sin.
* Transit demo: Has the transit tubes in a loop.  Not remotely practical.
* Secure bunker: Can only be entered from the holodeck control side.  Opaque and full of weapons.  Probably buggy and quite likely a terrible idea.

Adds walled-off areas to the map.  These may or may not be important.  Each has a falsewall entrance, none have windows.

Finishes arcticwaste.dmm so that the snowfield no longer ends on a ragged space edge.  May perhaps be slightly less immersion breaking unless you ghost past the edge of the trees or something.  I have no idea if the atmo will still leak or not.

Fixes(?) the holodeck area copy's duplicate object functionality to hopefully work better with actual objects.  That said, this makes the holodeck stupidly powerful...

Added code to check holodeck items for mobs in their contents.  This will hopefully make sure that people in transit pods do not die if the simulation ends on them.