generate dartisans from playlist, keep everything up to date

src/site/_layouts/dartisans_episode.markdown

 ---
 layout: default
 ---
 
 # {{ page.episode.title }}
 
 <div class="row" style="margin-top: 25px">
         <div class="span12">
 
-                <img style="box-shadow: 5px 5px 10px #CCC; float: left; margin-right: 25px" src="dartisans-{{page.episode.num | format_num: "%02d" }}-thumb.jpeg" width="120" height="90" alt="Screenshot of Dartisans ep {{ page.episode.num }}">
+                <img style="box-shadow: 5px 5px 10px #CCC; float: left; margin-right: 25px" src="{{ page.episode.thumbnail }}" width="120" height="90" alt="Screenshot of Dartisans ep {{ page.episode.num }}">
 
                 <p>
                         {{ page.episode.description }}
                 </p>
 
                 <p>
                         This hangout was recorded on {{ page.episode.pubdate }}.
                 </p>
 
         </div>
 </div>
 
 <div class="row" style="margin-top: 25px">
         <div class="span12">
 
                 <iframe width="640" height="360" src="http://www.youtube.com/embed/{{ page.episode.youtubeid }}" frameborder="0" allowfullscreen></iframe>
 
                 <p>
-                        Watch more <a href="index.html">recordings of previous episodes of Dartisans</a>
+                        Watch more <a href="/dartisans/">recordings of previous episodes of Dartisans</a>
                         or subscribe to an
                         <a href="/dartisans/podcast-feed"><i class="icon-rss"> </i> audio podcast of Dartisans</a>.
                 </p>
 
         </div>
 </div>