Removed youtube video, replaced 404 message with a static image refer…

…ring to the old version

dashboard/static/css/base.scss

@@ -641,9 +641,8 @@ footer {
             }
         }
 
-        .youtube {
-            width: 520px;
-            height: 293px;
+        .bird {
+            width: 350px;
 
             img {
                 display: block;

dashboard/templates/404.html

@@ -10,7 +10,7 @@ <h1>404</h1>
       <div class="panel">
         <div class="pointer"></div>
         <h2>Oye, something went wrong.</h2>
-        At least this little bird is here to keep you company...
+        Much like our bird, it looks like the page has <abbr title="phrase; to make one's escape">flown the coop</abbr>!
       </div>
 
       <div class="mui-row section">
@@ -20,9 +20,9 @@ <h2>Oye, something went wrong.</h2>
           <a href="/dashboard" class="mui-btn return">Return to dashboard</a>
         </div>
 
-        <div class="mui-col-md-6 mui-col-lg-8 video">
-          <div class="youtube" data-id="Ybvwh0reiMU">
-            <img src="/static/img/404.jpg" alt="404">
+        <div class="mui-col-md-6 mui-col-lg-8">
+          <div class="bird">
+            <img src="/static/img/404-birdcage.jpg" alt="404">
           </div>
         </div>
       </div>
@@ -31,7 +31,3 @@ <h2>Oye, something went wrong.</h2>
     </div>
   </div>
 {% endblock %}
-
-{% block extra_js %}
-  <script type="text/javascript" src="/static/js/404.js"></script>
-{% endblock %}