Icon appearance changes:
- Let icons show at full opacity everywhere EXCEPT the belt (stands out too much when the inventory isn't open). This helps a lot with the "washed out" look.
- Belt icons set to 90% opacity.
- Updated some icons that I'd missed, that aren't linked to any icon prefab
- Rebuilt all loot panels; even ones that linked to the icon prefab didn't update until their prefabs were regenerated