[Qt] include and file header cleanup

- alphabetical ordering
- correct ordering own headers before normal headers etc.

src/qt/rpcconsole.h

@@ -14,14 +14,14 @@
 
 class ClientModel;
 
-QT_BEGIN_NAMESPACE
-class QItemSelection;
-QT_END_NAMESPACE
-
 namespace Ui {
     class RPCConsole;
 }
 
+QT_BEGIN_NAMESPACE
+class QItemSelection;
+QT_END_NAMESPACE
+
 /** Local Bitcoin RPC console. */
 class RPCConsole: public QDialog
 {