NIHVIVO-1394 Provide a currentPage variable to the page template.

webapp/src/edu/cornell/mannlib/vitro/webapp/controller/freemarker/FreemarkerHttpServlet.java

@@ -416,6 +416,9 @@ public class FreemarkerHttpServlet extends VitroHttpServlet {
             map.put("flash", flashMessage);
         }
 
+        // Let the page template know which page it's processing. 
+        map.put("currentPage", vreq.getServletPath().replaceFirst("/", ""));
+        
         return map;        
     }