Converted Observatory nav-notify element

runtime/observatory/lib/src/elements/class_ref.html

 <link rel="import" href="../../../../packages/polymer/polymer.html">
-<link rel="import" href="observatory_element.html">
+
 <link rel="import" href="service_ref.html">
 
-<polymer-element name="class-ref" extends="service-ref">
+<polymer-element name="class-ref">
   <template>
     <link rel="stylesheet" href="css/shared.css">
     <style>
       .indented {
         margin-left: 1.5em;
         font: 400 14px 'Montserrat', sans-serif;
         line-height: 150%;
       }
     </style><!--
     --><a on-click="{{ goto }}" _href="{{ url }}">{{ ref.name }}</a><!--
     --><template if="{{ asValue }}">
       <curly-block callback="{{ expander() }}" expandKey="{{ expandKey }}">
         <div class="indented">
           <template repeat="{{ field in ref.fields }}">
             <template if="{{ field.isStatic }}">
               {{ field.name }}&nbsp;:&nbsp;
               <any-service-ref ref="{{ field.staticValue }}"
                                expandKey="{{ makeExpandKey(field.name) }}">
               </any-service-ref><br>
             </template>
           </template>
         </div>
       </curly-block>
     </template><!--
   --></template>
 </polymer-element>
 
 <script type="application/dart" src="class_ref.dart"></script>