Adds a variable to hats to determine how likely they are to fall off. Makes them fall off with the given probability when disarmed (some percentage of the time) or when the character falls. Space helmets, bio hoods, helmets, radiation helmets, etc, are unlikely to fall off
Conflicts:
code/game/gamemodes/cult/cult_items.dm
code/modules/clothing/clothing.dm
code/modules/clothing/head/hardhat.dm
code/modules/clothing/head/helmet.dm
code/modules/clothing/head/jobs.dm
code/modules/clothing/head/misc.dm
code/modules/clothing/head/misc_special.dm
code/modules/clothing/suits/bio.dm
code/modules/clothing/suits/utility.dm
code/modules/events/tgevents/holiday/xmas.dm
code/modules/mob/mob.dm