ACF5: Fix incorrect ammo display on turn start at wave 3

New formula to calculate drawn map sizes, now every FeatureSize leads to an unique size It works by using 4 hardcoded map sizes and the rest is simply interpolated. Size 1: 1024×512 Size 6: 2048×1024 Size 12: 4096×2048 (default, compatible with pre-1.0.0) Size 25: 8192×4096

Fix air mine spawning inside land if land is almost completely full Bug conditions: * cAirMines >= 1 * Play with a drawn map filled with land