more rules tweaks

- Moved "voice" off the major stats.
- Added "Mystique" as a sort of Charisma stat.
- Calculation is different. 1d6 -3, to a default of 10. So minimum of 8
to max of 13. Then voice and comeliness add bonuses or maluses.
- Added to-hit bonus calculated as STR+STR+DEX for every point above 12
(or below 9)
- Tweaked initiative rolls again, replaced the 1d100 with a 1d20 - 10,
to narrow much more the random spread on the actual skill value. So now
it's a +10% / -10% on skill value.