gui/js: Update to latest NDN.JS

Change-Id: Ica3a4e20fe36ad3c4dedeee729dcc899684d6b77
diff --git a/gui/html/chronoshare-helpers.js b/gui/html/chronoshare-helpers.js
index f1e9aa1..b727c6c 100644
--- a/gui/html/chronoshare-helpers.js
+++ b/gui/html/chronoshare-helpers.js
@@ -99,7 +99,7 @@
 
 
 openHistoryForItem = function(fileName) {
-  url = new HistoryClosure(null).base_no_item_url("fileHistory")
+  url = new HistoryDisplay(null).base_no_item_url("fileHistory")
   url += "&item=" + encodeURIComponent(encodeURIComponent(fileName));
   document.location = url;
 };
@@ -161,4 +161,4 @@
       }
     }
   });
-}
\ No newline at end of file
+}