revert to "webpack": "1.15.0"

Author: nkumar-topcoder

package.json

@@ -40,10 +40,7 @@
     "redux-logger": "2.10.2",
     "sinon": "1.17.7",
     "sinon-chai": "2.12.0",
-    "webpack": "3.0.0",
-    "webpack-dev-server": "2.9.1",
-    "webpack-hot-middleware": "2.21.0",
-    "webpack-merge": "4.1.1"
+    "webpack": "1.15.0"
   },
   "dependencies": {
     "angucomplete-alt": "2.5.0",