Webpack optimizations and fixes

webapp/package.json

@@ -31,7 +31,7 @@
     "babel-loader": "6.2.4",
     "babel-plugin-transform-runtime": "6.6.0",
     "babel-polyfill": "6.7.2",
-    "babel-preset-es2015": "6.6.0",
+    "babel-preset-es2015-webpack": "6.4.0",
     "babel-preset-react": "6.5.0",
     "babel-preset-stage-0": "6.5.0",
     "eslint": "2.2.0",
@@ -39,6 +39,7 @@
     "exports-loader": "0.6.3",
     "extract-text-webpack-plugin": "1.0.1",
     "file-loader": "0.8.5",
+    "url-loader": "0.5.7",
     "html-loader": "0.4.3",
     "copy-webpack-plugin": "1.1.1",
     "css-loader": "0.23.1",
@@ -52,6 +53,7 @@
   },
   "scripts": {
       "check": "eslint --ext \".jsx\" --ignore-pattern node_modules --quiet .",
-      "build": "webpack --progress"
+      "build": "webpack --optimize-dedupe",
+      "run": "webpack --progress"
   }
 }