You can now properly clean your hands of blood. Fixes #2258.
When you touch an item, to spread the blood, it would take the "bloody_hands" to 0; which is checked if true while you wash your hands. I limited it to only go down to 1, so it will still be true unless you wash your hands.
Fixed an issue where blood_DNA was being cleared before the blood_hands variable was being set to 0. Now you can properly hide your bloody hands with gloves and when you take them off the hands will still be bloody.
Removed an unused variable.
Set the bloody_hands_mob to null where it was appropriate.
The amount of blood you can transfer to other items, when you touch them, will be a little random for variety.
Revive() will now heal your hallos damage.
Merge pull request #2484 from Giacom/bloody_hands_so_real

You can now properly clean your hands of blood. Fixes #2258.