Adds 55 gallon steel drum.

The final statement in fluid storage.
Recipe.
Tweak.
Boosts stats on the ferromagnetic rail rifle.

So it does in practice, what it did in theory.
Tweak.
30 gallon barrel.
Halligan tool.
Firefighter's pickhead axe.
Recipes for the forge.
Fireman's helmet!
Tweak.
30 gallon drum recipe.
Tweak.
Fire fighter clothing stuff!

Bunker gear for all parts of the body, with bonus separate nomex inner
layers!
Better nomex integration.
Huge content expansion.

New profession, two new oxygen tank tools, new monster type and item
groups, new support for cop_gear item group group, better cop_weapons
item group, new skill/recipe book, new survivor suit variant, tuned up
firetruck item spawns, and fixed a couple of errors here and there too.
Final integration.
Entry suit and final touches.
Tweak.
Fixed.