Harmonize marker / popup rendering

build/webpack.common.js

@@ -82,7 +82,6 @@ module.exports = {
 					from: path.resolve(LIB, 'index.php'),
 					to: 'index.php'
 				},
-				{ from: 'src/images/footprint_mapbox.png', to: 'images' },
 				{ from: 'src/images/logo_black.png', to: 'images' },
 				{ from: 'src/images/spot-logo-only.svg', to: 'images' }
 			],