``/mob/dead/observer`` -> ``/mob/observer/dead``
``/mob/eye`` -> ``/mob/observer/eye``
Reason being that they are similar in that they both don't interact with
the world in any way. Some procs were shared, some checks as well, and
it overall makes more sense this way. Plus, there were no ``/mob/dead``
mobs.
Added ghost trap system used by plants and posibrains to get players. Added attack_ghost() to hydro trays and posibrains for the aforementioned.
Changelog.
Minor typo.
Topic fixes.
Minor fix.
