Display a "freshness" indicator instead of nr of blocks

src/qt/clientmodel.cpp

@@ -7,6 +7,7 @@
 #include "headers.h"
 
 #include <QTimer>
+#include <QDateTime>
 
 ClientModel::ClientModel(CWallet *wallet, QObject *parent) :
     QObject(parent), wallet(wallet), optionsModel(0)
@@ -30,6 +31,11 @@ int ClientModel::getNumBlocks() const
     return nBestHeight;
 }
 
+QDateTime ClientModel::getLastBlockDate() const
+{
+    return QDateTime::fromTime_t(pindexBest->GetBlockTime());
+}
+
 void ClientModel::update()
 {
     // Plainly emit all signals for now. To be more efficient this should check