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

* Fixes the runtimes when picking up nettles as a non-human.  Fixes part of #5553. 
* 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.