[BUG] Massive exploit with Multi-Z combat. All maps affected.

[Yawet330]

Description of issue: Being able to vaporise someone with your mind if you're on a higher z-level than them.

Difference between expected and actual behavior:

I should not be able to vaporise someone with my mind-powers
I can

Steps to reproduce:

Step 1: Stand on colony plaza upper level
Step 2: Ctrl Click/Grab anyone walking by
Step 3: Click on them
Step 4: Notice they've taken falldamage but they haven't moved
Step 5: Do the next, logical thing and wonder what happens if you spamclick.

Step 6: Realise all of their limbs few off
Step 7: Bwoink

This is a pretty easy fix, just make dragging people between z-levels have a timer rather than being instant.