- teilweise Umstellung von css auf scss (page.scss)

- adding fontawesome-free, sass-loader, node-sass. resolve-url-loader
- MobileDialog.js isn't a map control anymore
- about menu with small description (mouse icons)

package.json

@@ -4,6 +4,7 @@
     "description": "3D geology viewer",
     "main": "dist/main.js",
     "dependencies": {
+        "@fortawesome/fontawesome-free": "^5.15.2",
         "normalize.css": "^8.0.1",
         "proj4": "^2.6.3",
         "three": "^0.125.1"
@@ -23,6 +24,9 @@
         "img-loader": "^3.0.2",
         "less-loader": "^7.1.0",
         "mini-css-extract-plugin": "^1.3.1",
+        "node-sass": "^5.0.0",
+        "resolve-url-loader": "^3.1.2",
+        "sass-loader": "^11.0.1",
         "style-loader": "^2.0.0",
         "terser-webpack-plugin": "^5.0.3",
         "url-loader": "^4.1.1",