A complete rewrite of the dock proc for shuttles to make it more maintainable and readable and also bring over some new features while we're at it. This allows for multi-area shuttles and more control over the effects of anything being moved.
Areas, and movable atoms all have (before|on|after)ShuttleMove procs, turfs have (from|to)ShuttleMove procs which are called the same as beforeShuttleMove.
All ShuttleMove procs have been moved to a single file in the shuttle module.
Stationary docks will have their baseturf_type and area_type modified in maps once the problems have been worked out.
