Add a new dashboard page.

webui/.postcssrc.js

@@ -0,0 +1,8 @@
+// https://github.com/michael-ciniawsky/postcss-load-config
+
+module.exports = {
+  plugins: [
+    // to edit target browsers: use "browserslist" field in package.json
+    require('autoprefixer')
+  ]
+}