Added self updating firehose.html and chat.html

meshview/templates/firehose.html

@@ -111,7 +111,7 @@ document.addEventListener("DOMContentLoaded", () => {
 
     // Start fetching updates
     fetchUpdates();
-    setInterval(fetchUpdates, 1000);
+    setInterval(fetchUpdates, 5000);
 });
 </script>