Revert "Bump webpack-dev-server from 2.11.5 to 3.1.11"

Author: qatoco

package.json

@@ -21,7 +21,7 @@
     "html-webpack-plugin": "^2.16.0",
     "style-loader": "^0.13.2",
     "webpack": "3.12.0",
-    "webpack-dev-server": "3.1.11"
+    "webpack-dev-server": "2.11.5"
   },
   "dependencies": {
     "draft-js": "0.10.1",