Polished up the portraits some more, updated for V69

Lunaari employ happiness in sawmill > 1.0, Lunaari workrate in sawmill > 2.0 (equals workrate in carpenter), humans like refined_wood > 1.0 (was 0.4)

Touched up art, made custom hats for raiders, nobles have robes now

Updated for V66 + polished up the faces

- Fixed description of Lunaari Nursery referencing 'Meat' as input while it requires 'Eggs'
- Added Lunaari-plebs requirement as a workaround for being able to buy the sawmill improvement researches without having any Lunaari

Let me know if this breaks your save, I will roll it back since these are simply minor issues.
I'd rather have you keep your time played rather than having to start over because of research bug.