Fixes the runtimes when picking up nettles as a non-human. 

Fixes the runtimes when picking up nettles as a non-human.  Fixes #5553. (Pretty sure that was the last runtime to fix.
Fixes not getting any message when hurt by picking up death nettle (the stun message doesn't mention damage and only appears half the time).
Changing two span class. 
Maintenance drones no longer take damage when picking up nettles.