ui: better config page layout

packages/ui-default/package.json

@@ -99,6 +99,8 @@
     "redux-promise-middleware": "^6.2.0",
     "redux-thunk": "^3.1.0",
     "rupture": "^0.7.1",
+    "sass": "^1.86.0",
+    "sass-loader": "^16.0.5",
     "schemastery": "^3.16.1",
     "schemastery-react": "^0.1.2",
     "shorty.js": "^1.0.1",