Optimize html-embedding

Viewer/webpack.config.js

@@ -37,7 +37,10 @@ module.exports = {
         {
             test: /\.(html)$/,
             use: {
-                loader: 'html-loader'
+                loader: 'html-loader',
+                options: {
+                    minimize: true
+                }
             }
         },
         {