Rename the misleadingly-named AmmoSchemeModel to GameSchemeModel
AmmoSchemeModel was a misleading name, this class was actually used only for game schemes.
f3e903ace2d3
Make hedgewars frontend not change scheme/weps to Default if script cfg doesn't match a known scheme. That is, will leave on whatever is selected. Also set a bunch of schemes where we don't care what the scheme/weps are to *