Tidy up the service protocol. Begin improving the documentation.

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

 <link rel="import" href="../../../../packages/polymer/polymer.html">
 <link rel="import" href="curly_block.html">
 <link rel="import" href="eval_box.html">
 <link rel="import" href="eval_link.html">
 <link rel="import" href="field_ref.html">
 <link rel="import" href="function_ref.html">
 <link rel="import" href="instance_ref.html">
 <link rel="import" href="library_ref.html">
 <link rel="import" href="nav_bar.html">
 <link rel="import" href="observatory_element.html">
@@ skipping 59 matching lines @@
           </div>
         </template>
 
         <div class="memberItem">&nbsp;</div>
 
         <template if="{{ cls.interfaces.length > 0 }}">
           <div class="memberItem">
             <div class="memberName">implements</div>
             <div class="memberValue">
               <template repeat="{{ interface in cls.interfaces }}">
-                <class-ref ref="{{ interface }}"></class-ref>
+                <instance-ref ref="{{ interface }}"></instance-ref>
               </template>
             </div>
           </div>
         </template>
         <template if="{{ cls.name != cls.vmName }}">
           <div class="memberItem">
             <div class="memberName">vm name</div>
             <div class="memberValue">{{ cls.vmName }}</div>
           </div>
         </template>
@@ skipping 116 matching lines @@
                   startPos="{{ cls.tokenPos }}"
                   endPos="{{ cls.endTokenPos }}">
     </script-inset>
 
     <br><br><br><br>
     <br><br><br><br>
   </template>
 </polymer-element>
 
 <script type="application/dart" src="class_view.dart"></script>