Changed default skill rust setting from "vanilla" to "int"

A new player creating their first character sees "skill rust: XX%"
listed when selecting their int value, but in "vanilla" rust it
actually has no effect.

It's more intuitive for things, out of the box, to work the way the
character creation implies they do.
Add hat-tipping to fedora, you're welcome vrs ;)
Make block value depend on strength and melee skill

Quick and dirty change to blocking, making it dependent on str and melee skill. Unarmed blocks also use the unarmed combat skill. Effectively a nerf for most values of str and melee skill.
bugfixes
Minor formatting fix
Conflicts:
	data/json/items/tools.json
Add Wishbringer's sanity check and formatting fix
Use best block first

If for some reason someone adds a weapon with two block techniques (why would you do that), the best block technique gets used.
Fix Unarmed Combat skillname
Alter diazepam functionality re: tetanus.

Now diazepam suppresses the symptoms from manifesting for several hours
after consuming it. Antibiotics are needed to actually cure tetanus.
Diazepam also prevents the 'shakes' condition for its duration.
Merge pull request #7897 from kevingranade/fedora-hat-tip

Add hat-tipping to fedora, you're welcome vrs ;)
Gives mininukes a 50% larger blast radius.

Now they can actually take out about 3/4 of a house in one shot. Also
increased launcher range by 50% to compensate for the larger explosion.
Streamline block calculation and base damage blocking on logistic function.
Bracket sanity.
Change liquid volume to 1, fixes waterskins
Move blocks_left decriment before blocking.
Move block message after blocking occurs.
Extract calculation of block damage reduction from loop.
Bail out of block iteration if martial arts bonus absorbed the damage.
Record how much damage is blocked.
Describe how much damage was blocked in block message.