created common nav bar in footer, changed send feedback link

src/site/docs/tutorials/web-ui/index.markdown

 ---
 layout: default
 title: "Target 6: Get Started with Web UI"
 description: "Web UI provides web components, templates, data binding, and encapsulation."
 has-permalinks: true
 tutorial:
   id: get-started-web-ui
+next: templates
+next-title: "Use <template>"
+prev: packages
+prev-title: "Install Shared Packages"
 ---
 
 {% capture whats_the_point %}
 
 * Web UI is an open-source package.
 * Web UI provides web components for Dart apps.
 * Other features support separation of data and presentation.
 * Compile Web UI apps automatically in Dart Editor.
 * Use data binding to sync Dart variables and UI elements.
 * Attach event handlers to UI elements in HTML.
@@ skipping 535 matching lines @@
     <a href="/docs/cookbook/#web-ui">Web UI recipes</a>.
   </li>
   <li>
     Sigmund Cherem's article,
     <a href="/articles/dart-web-components/">Web UI Package</a>,
     contains several interactive examples on the page
     and the corresponding source code.
   </li>
 </ul>
 
-<hr>
-
-<div class="row">
-  <div class="span3">
-  <a href="/docs/tutorials/packages/"><i class="icon-chevron-left"> </i> Install Shared Packages</a>
-  </div>
-  <div class="span3">
-<a href="http://code.google.com/p/dart/issues/entry?template=Tutorial%20feedback"
- target="_blank">
-<i class="icon-comment"> </i>
-Send feedback
-</a>
-  </div>
-  <div class="span3">
-  <a href="/docs/tutorials/templates/" class="pull-right">Use &lt;template&gt; <i class="icon-chevron-right"> </i> </a>
-  </div>
-</div>
-
 {% endcapture %}
 
 {% include tutorial.html %}