Changes

• Added a Polearm command for applying a polearm at Alt-P (previous weapon was moved to Alt-W), also available in more commands.
• A polearm context button shows up when wielding a polearm.
• The Worn items button now shows the normal inventory's equipment screen by default, rather than the filtered inventory (changeable in settings).
• Added a swap weapon button to the equipment screen.
• Both polearm and fire commands now automatically swap weapons if need be.
• Added a few new setting category titles.
• Various bug fixes.