Integrate the new UI pages with the working backend for the rate_summary task. This also migrates some pages to properly link up authorization flows. Some cruft is still in

website/src/lib/fetcher.ts

@@ -0,0 +1,8 @@
+import axios from "axios";
+
+/**
+ * A minimal Axios based fetcher.
+ */
+const fetcher = (url) => axios.get(url).then((res) => res.data);
+
+export default fetcher;