[Qt] style police and small addition in rpcconsole

- fix spaces, indentation and coding style glitches

src/qt/rpcconsole.h

@@ -6,17 +6,19 @@
 #define RPCCONSOLE_H
 
 #include "guiutil.h"
-#include "net.h"
-
 #include "peertablemodel.h"
 
+#include "net.h"
+
 #include <QDialog>
 
 class ClientModel;
-
-class QItemSelection;
 class CNodeCombinedStats;
 
+QT_BEGIN_NAMESPACE
+class QItemSelection;
+QT_END_NAMESPACE
+
 namespace Ui {
     class RPCConsole;
 }