Add more information to scrobbles views and refactor artists view

src/app/views/scrobbles/index.zmpl

@@ -10,6 +10,7 @@
 <thead>
 <tr>
 <th>Song</th>
+<th>Artist(s)</th>
 <th>Album</th>
 <th data-type="date" data-format="DD MMM YYYY, HH:mm">Date</th>
 </tr>
@@ -18,6 +19,11 @@
 @for (.scrobbles) |scrobble| {
   <tr>
   <td class=cell><a href="/songs/{{scrobble.song_id}}">{{scrobble.song_name}}</a></td>
+  <td class=cell>
+  @for (scrobble.get("artist_info").?) |ai| {
+    <a href="/artists/{{ai.url}}">{{ai.name}}</a>
+  }
+  </td>
   <td class=cell><a href="/albums/{{scrobble.album_id}}">{{scrobble.album_name}}</a></td>
   <td class=cell>{{scrobble.date}}</td>
   </tr>