[templates] Add aggregate data

vrobbler/templates/books/book_detail.html

@@ -33,7 +33,11 @@
     <p><a href="{{object.next_readcomics_url}}">Read next issue</a></p>
     {% endif %}
 
-    <p>{{scrobbles.count}} scrobbles</p>
+    <p>
+        {{scrobbles.count}} scrobbles
+        {% if long_play_total_seconds %} | Total time: {{ long_play_total_seconds|natural_duration }}{% endif %}
+        {% if long_play_finished_date %} | Finished: {{ long_play_finished_date|date:"M d, Y" }}{% endif %}
+    </p>
 
     <p><a href="{{object.resume_start_url}}">Resume reading</a></p>
 </div>