Show cache memory usage.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16808 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/dtml/cache_tool_configure.dtml

 <dtml-var manage_page_header>
 <dtml-var manage_tabs>
 
+<h3>Cache memory usage (in bytes)</h3>
+  <dtml-var expr="getCacheTotalMemorySize()">
+
 <h3>Cache invalidation</h3>
   <form action="clearAllCache" method="POST">
     <input type="submit" value="Clear all cache factories"/>