- Increase or decrease happiness for a variety of foods and food
categories based on subjective quality when the Refined Palate trait is
active.
- Move the trait definition to the shared code.
- Add icons for the "Refined Palate" and "Not a Picky Eater" traits.
- Rename "Unpicky Eater" to "Not a Picky Eater"
- Wrap around the `ISEatFoodAction:perform` and `ISToolTipInv:render`
methods, adjusting unhappiness and boredom increase if the trait is
present.
- Reorganize files
