fix a couple UI bugs introduced by the XUL changes

security/manager/pki/resources/content/certManager.xul

@@ -55,7 +55,7 @@
             <tab id="mine_tab" label="&certmgr.tab.mine;" />
             <tab id="others_tab" label="&certmgr.tab.others;" />
             <tab id="websites_tab" label="&certmgr.tab.websites;" />
-            <tab id="ca_tab" value="&certmgr.tab.ca;" selected="true"/>
+            <tab id="ca_tab" label="&certmgr.tab.ca;" selected="true"/>
           </tabbox>
           <tabpanel flex="1">
             <box id="myCerts" flex="1"/>

security/manager/pki/resources/content/viewCertDetails.js

@@ -66,7 +66,7 @@ function AddUsage(usage)
   var row  = document.createElement("treerow");
   var cell = document.createElement("treecell");
   cell.setAttribute("class", "propertylist");
-  cell.setAttribute("value", usage);
+  cell.setAttribute("label", usage);
   row.appendChild(cell);
   tree.appendChild(row);
 }