UI tweaks for layers menu
fix usage of vehicle::part_with_feature
Armor, spawns, recipes, and tools.
Incorrect/doubled container name.
reset field::drawn_symbol to the field with the highest priority
Merge bugfixes.
Merge clothing layering UI tweaks.

Conflicts:
	src/player.cpp
Merge misc content fixes.

Conflicts:
	data/json/item_groups.json