Received new key art for the game; integrated it into the title screen!

-- fixed: when mousing over units covered by fog of war, the game would show a mouseover tooltip, display a health bar, and position the cursor over them.
-- fixed: you could left-click enemy characters covered by fog of war to display their threat range.
-- fixed: you could right-click units covered by fog of war to open the character screen.
-- fixed: Cloch's portrait mask was unformatted, preventing army-color palette swapping.
-- fixed: the reserve supplies screen allowed the player to give additional items to characters with full inventories.