Rework how ServiceObjects are created and cached in Observatory.

runtime/bin/vmservice/client/deployed/web/index.html

Index: runtime/bin/vmservice/client/deployed/web/index.html
diff --git a/runtime/bin/vmservice/client/deployed/web/index.html b/runtime/bin/vmservice/client/deployed/web/index.html
index f024c58fef53f82bc55967469ba6ce837ad417ae..8cc1d2de3d8a26c196db49f112174b596e9efdd7 100644
--- a/runtime/bin/vmservice/client/deployed/web/index.html
+++ b/runtime/bin/vmservice/client/deployed/web/index.html
@@ -424,8 +424,7 @@
               <div style="color:#aaa;cursor:wait;">&lt;pending&gt;</div>
             </template>
             <template if="{{ result['value'] != null }}">
-              <instance-ref isolate="{{ isolate }}" ref="{{ result['value'] }}">
-              </instance-ref>
+              <instance-ref ref="{{ result['value'] }}"></instance-ref>
             </template>
           </td>
         </tr>
@@ -529,7 +528,7 @@
 
         <div class="memberItem">&nbsp;</div>
 
-        <template if="{{ cls['super']['type'] != 'Null' }}">
+        <template if="{{ cls['super'] != null }}">
           <div class="memberItem">
             <div class="memberName">extends</div>
             <div class="memberValue">
@@ -1832,7 +1831,7 @@
     <br>
 
     <ul class="list-group">
-      <template repeat="{{ isolate in vm.allIsolates }}">
+      <template repeat="{{ isolate in vm.isolates }}">
       	<li class="list-group-item">
           <isolate-summary isolate="{{ isolate }}"></isolate-summary>
         </li>