Update to ruleset v16-playtest

[CodeWringer]

1. [x] Add grit point tracker to combat tracker, per combatant
2. [x] Add grit point tracker to character sheet (visible only if there is at least one injury)
3. [x] Make grit points optional for NPCs
4. [x] Add compensation points to roll and dialog
5. [x] New HP and injury limit calculations
6. [x] Update acrobatics expertise "Deft Evasion"
7. [x] Add death's door tracker to PC character sheet (visible when HP reach 0)
8. [x] Remove injury exhaustion threshold (if not already done)
9. [x] Update fate-cards
10. [x] Update unarmed combat and all weapon skills
11. [x] Update "Armor Smithing", "Bow-Making", "Rune Carving"
12. [x] Update magic schools (if not already done)
13. [x] Update skill advancement calculation
14. [x] Add "advanced" check box to progression-enabled attributes and skills