Moved item menu from main.js to base_player.js and will display alongside wait button.
Aligned buttons into position. Added begin/end code divider comments.
Added item menu refresh on equip. Removed unnecessary code.
Minor refactoring to unit's items. Unit can now display 5 item slots and will display blank slots for no item in respective slot.
Fixed bug where changing passing active unit along two player's units will not properly clean menu buttons.