Add data-loading example to ReactSpa template, and remove server-side rendering (because you really need Redux/Flux or similar for that to make sense)

templates/ReactSpa/tsd.json

@@ -16,6 +16,9 @@
     },
     "react-router/history.d.ts": {
       "commit": "dade4414712ce84e3c63393f1aae407e9e7e6af7"
+    },
+    "whatwg-fetch/whatwg-fetch.d.ts": {
+      "commit": "dade4414712ce84e3c63393f1aae407e9e7e6af7"
     }
   }
 }