Make the station Zlevel accessible from the derelict one.

[Splatpope]

And maybe we can get rid of the code that respawns the nuke disk if it moves off the station zlevel - limiting that to the admin zlevel if at all- and make pinpointers recognize that the disk is on another level.

So every nuke round ends with the disk being taken to biodome and the elevator sabotaged?

- limiting that to the admin zlevel if at all-

i guess thats it