"Fix" loading torrent pages directly

src/torrent_state.js

@@ -12,7 +12,6 @@ export function activeTorrents() {
   }
 }
 
-// TODO: invoke on page load for /torrents/:id
 export function updateSubscriptions(added, removed) {
   if (added.length > 0) {
     added.forEach(t => {

src/ui/torrent_details.js

@@ -70,6 +70,12 @@ class Torrent extends Component {
     const { torrent, files } = this.props;
     const status = s => s[0].toUpperCase() + s.slice(1);
 
+    if (!torrent || !files) {
+      return (
+        <p>Loading...</p>
+      );
+    }
+
     return (
       <div>
         <h3>{torrent.name}</h3>