doc: add Practical Go Programming to front page and docs.html

R=r
CC=golang-dev
https://golang.org/cl/3391042

doc/docs.html

@@ -120,6 +120,14 @@ examples demonstrating features particular to Go.  These include concurrency,
 embedded types, methods on any type, and program construction using interfaces. 
 </p>
 
+<h3 id="practical_go_programming"><a href="http://osdc.blip.tv/file/4432146/">Practical Go Programming</a></h3>
+<p>
+This talk presents the development of a complete web application in Go.
+It looks at design, storage, concurrency, and scaling issues in detail, using
+the simple example of an URL shortening service.
+See the <a href="http://wh3rd.net/practical-go/">presentation slides</a>.
+</p>
+
 <h3 id="techtalk"><a href="http://www.youtube.com/watch?v=rKnDgT73v8s">The Go Tech Talk</a></h3>
 <p>
 An hour-long talk delivered by Rob Pike at Google in October 2009. 

doc/frontpage.css

@@ -77,6 +77,9 @@ span.keyword {
 #content-videos .thumbnail._003 {
   background: url(/doc/video-003.png);
 }
+#content-videos .thumbnail._004 {
+  background: url(/doc/video-004.png);
+}
 #content-videos a.video {
   display: inline-block;
   width: 150px;

doc/root.html

@@ -60,7 +60,7 @@ google.setOnLoadCallback(loadFeed);
       <div id="content-rotating">
       <div id="content-videos">
         <h2>Go Videos <span class="more">| <a href="/doc/docs.html#videos_talks">More...</a></span></h2>
-        <a class="video" href="http://www.youtube.com/watch?v=jgVhBThJdXc"><img src="/doc/play_overlay.png" class="thumbnail _001" /> <span class="caption title">&ldquo;Go Programming&rdquo;</span> <span class="caption description">Google I/O Tech Talk</span></a>
+        <a class="video" href="http://osdc.blip.tv/file/4432146/"><img src="/doc/play_overlay.png" class="thumbnail _004" /> <span class="caption title">&ldquo;Practical Go Programming&rdquo;</span> <span class="caption description">OSDC Tech Talk</span></a>
       </div>
       <h2>Go Blog <span class="more">| <a href="http://blog.golang.org/">More...</a></span></h2>
       <div id="content-blog">