fixed bio grenade errors

renamed event identifiers to work with demonic creatures
renamed the blood analyzer identifier to work with Neurotrauma

LET ME KNOW IF NATURAL SPAWNING IN CAMPAIGN IS BROKEN

Husk sprinters. lurkers, and brutes can now spawn in wrecks with a low chance.

For balancing purposes, and taking into account the fact that brutes are very destructive, they have even less of a chance to spawn in a wreck.

small balancing changes, pushing this update for a test run

• many significant fixes to the husk infection, accounting for vomiting with and without a diving suit on.
  
• fixed some husk variants requiring clothes from EHA. That will come in a later patch.
  
• de-bloated mod size, removing unused assets

some small changes to make infection via coughing more consistent.

public testing version