fixed several 'retina display' images and added a bunch more (though just from upscaling the normal ones; might be nice to have 'em redrawn at a real higher resolution)
file(GLOB AmmoMenuSprites *.png)
list(REMOVE_ITEM AmmoMenuSprites *@2x.png)
install(FILES
${AmmoMenuSprites}
DESTINATION ${SHAREPATH}Data/Graphics/AmmoMenu)