Revert "Revert "Display ra open file stats on queue and node overview pages""

This reverts commit 8665a96.

Author: dcorbacho

priv/www/js/tmpl/node.ejs

@@ -346,6 +346,18 @@
   </table>
 </div>
 
+<div class="box">
+  <h3>Quorum queue open file metrics</h3>
+  <table class="facts">
+    <% for(var k in node.ra_open_file_metrics) { %>
+    <tr>
+      <th><%= k %></th>
+      <td><%= node.ra_open_file_metrics[k] %></td>
+    </tr>
+    <% } %>
+  </table>
+</div>
+
 <h3>Plugins <span class="help" id="plugins"></span></h3>
 <table class="list">
   <tr>

priv/www/js/tmpl/queue.ejs

@@ -121,6 +121,12 @@
         <th>Consumer utilisation <span class="help" id="queue-consumer-utilisation"></th>
         <td><%= fmt_percent(queue.consumer_utilisation) %></td>
       </tr>
+      <% if (queue.hasOwnProperty('members')) { %>
+      <tr>
+        <th>Open files</th>
+        <td><%= fmt_table_short(queue.open_files) %></td>
+      </tr>
+      <% } %>
     </table>
 
     <table class="facts">