Moving manifest/serviceworker into build script

package.json

@@ -10,21 +10,23 @@
   },
   "main": "app.js",
   "dependencies": {
-    "babel-core": "^6.26.0",
+    "babel-core": "^6.26.3",
     "babel-loader": "^7.1.4",
     "babel-preset-es2015": "^6.22.0",
     "babel-preset-react": "^6.22.0",
     "babel-preset-stage-0": "^6.24.1",
     "babel-preset-stage-2": "^6.22.0",
     "copy-dir": "^0.3.0",
+    "copy-files": "0.1.0",
     "css-loader": "^0.28.11",
     "expose-loader": "0.7.3",
     "extract-text-webpack-plugin": "3.0.0",
     "file-loader": "^0.11.2",
     "flux": "^3.1.3",
     "jquery": "^3.2.1",
+    "md5": "2.2.1",
     "mopidy": "^0.5.0",
-    "node-sass": "^4.8.3",
+    "node-sass": "^4.9.2",
     "react": "^16.3.0",
     "react-dom": "^16.3.0",
     "react-fontawesome": "*",
@@ -34,15 +36,14 @@
     "react-router": "^3.2.1",
     "react-sortablejs": "^1.3.6",
     "redux": "3.7.2",
-    "redux-devtools": "3.4.0",
+    "redux-devtools": "^3.4.1",
     "redux-thunk": "2.2.0",
     "sass-loader": "^6.0.7",
     "sortablejs": "^1.7.0",
     "style-loader": "^0.13.2",
     "url-loader": "^0.5.9",
     "webpack": "^3.11.0",
-    "webpack-strip": "0.1.0",
-    "md5": "2.2.1"
+    "webpack-strip": "0.1.0"
   },
   "scripts": {
     "build": "node build_tools/build.js",