Fix scheduler and OS X

package.json

@@ -16,7 +16,7 @@
     "electron-log": "^4.3.0",
     "focus-trap-react": "^8.3.2",
     "font-awesome": "^4.7.0",
-    "node-schedule": "^1.3.2",
+    "node-cron": "^1.2.1",
     "randomstring": "^1.1.5",
     "react": "^16.14.0",
     "react-checkbox-tree": "^1.6.0",
@@ -36,7 +36,8 @@
     "electron": "5.0.13",
     "electron-builder": "22.9.1",
     "electron-webpack": "^2.8.2",
-    "webpack": "4.44.2"
+    "webpack": "4.44.2",
+    "webpack-dev-server": "3.11.1"
   },
   "scripts": {
     "start": "react-scripts start",