Show the tags in the link editing form

templates/edit_link.mustache

@@ -19,7 +19,7 @@
     </div>
     <div class="tags">
       <label for="tags">Tags</label>
-      <input name="tags" type="text" value="" />
+      <input name="tags" type="text" value="{{#tags}}{{#tag}}{{name}} {{/tag}}{{/tags}}" />
     </div>
 
     <div class="submit">