Performance improvments (#2869)

webapp/package.json

@@ -67,8 +67,8 @@
   },
   "scripts": {
     "check": "eslint --ext \".jsx\" --ignore-pattern node_modules --quiet .",
-    "build": "webpack",
-    "run": "webpack --progress --watch",
+    "build": "NODE_ENV=production webpack",
+    "run": "NODE_ENV=production webpack --progress --watch",
     "run-fullmap": "webpack --progress --watch",
     "test": "mocha-webpack --webpack-config webpack.config-test.js \"**/*.test.jsx\""
   }