Devserver: remove the Known Issues. They're empty and it was a silly idea to

chrome/common/extensions/docs/static/css/site.css

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 .hidden {
   display: none;
 }
 
 body {
@@ skipping 534 matching lines @@
 }
 
 #filtered_apis {
   margin-top: 5px;
 }
 
 #skipto {
   display: none;
 }
 
-#known_issues {
-  background: #F5F5F5;
-  padding-top: 1px;
-  padding-bottom: 16px;
-  padding-right: 16px;
-  padding-left: 16px;
-}
-
 /* List with largeish images floated to the right. */
 .imaged li {
   clear: right;
 }
 
 .imaged li img {
   float: right;
   margin-bottom: 1em;
 }
 
@@ skipping 26 matching lines @@
   border: 1px solid #ccc;
   margin-top: -1px;
 }
 tabs content.unselected {
   display: none;
 }
 tabs content pre {
   margin: 0;
   padding: 10px;
 }