[Qt] fix Qt slot problem in receivecoinsdialog

- fixes error from debug.log:
  QMetaObject::connectSlotsByName: No matching signal for
  on_recentRequestsView_selectionChanged(QItemSelection,QItemSelection)
- small style fixes (e.g. alphabetical ordering if includes etc.)
- fixes #3992

src/qt/receivecoinsdialog.cpp

@@ -5,21 +5,21 @@
 #include "receivecoinsdialog.h"
 #include "ui_receivecoinsdialog.h"
 
-#include "walletmodel.h"
-#include "bitcoinunits.h"
 #include "addressbookpage.h"
-#include "optionsmodel.h"
+#include "addresstablemodel.h"
+#include "bitcoinunits.h"
 #include "guiutil.h"
+#include "optionsmodel.h"
 #include "receiverequestdialog.h"
-#include "addresstablemodel.h"
 #include "recentrequeststablemodel.h"
+#include "walletmodel.h"
 
 #include <QAction>
 #include <QCursor>
+#include <QItemSelection>
 #include <QMessageBox>
-#include <QTextDocument>
 #include <QScrollBar>
-#include <QItemSelection>
+#include <QTextDocument>
 
 ReceiveCoinsDialog::ReceiveCoinsDialog(QWidget *parent) :
     QDialog(parent),
@@ -78,7 +78,7 @@ void ReceiveCoinsDialog::setModel(WalletModel *model)
 
         connect(tableView->selectionModel(),
             SIGNAL(selectionChanged(QItemSelection, QItemSelection)), this,
-            SLOT(on_recentRequestsView_selectionChanged(QItemSelection, QItemSelection)));
+            SLOT(recentRequestsView_selectionChanged(QItemSelection, QItemSelection)));
         // Last 2 columns are set by the columnResizingFixer, when the table geometry is ready.
         columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(tableView, AMOUNT_MINIMUM_COLUMN_WIDTH, DATE_COLUMN_WIDTH);
     }
@@ -165,8 +165,7 @@ void ReceiveCoinsDialog::on_recentRequestsView_doubleClicked(const QModelIndex &
     dialog->show();
 }
 
-void ReceiveCoinsDialog::on_recentRequestsView_selectionChanged(const QItemSelection &selected,
-                                                                const QItemSelection &deselected)
+void ReceiveCoinsDialog::recentRequestsView_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
 {
     // Enable Show/Remove buttons only if anything is selected.
     bool enable = !ui->recentRequestsView->selectionModel()->selectedRows().isEmpty();

src/qt/receivecoinsdialog.h

@@ -18,8 +18,8 @@
 namespace Ui {
     class ReceiveCoinsDialog;
 }
-class WalletModel;
 class OptionsModel;
+class WalletModel;
 
 QT_BEGIN_NAMESPACE
 class QModelIndex;
@@ -64,9 +64,9 @@ private slots:
     void on_showRequestButton_clicked();
     void on_removeRequestButton_clicked();
     void on_recentRequestsView_doubleClicked(const QModelIndex &index);
-    void on_recentRequestsView_selectionChanged(const QItemSelection &, const QItemSelection &);
+    void recentRequestsView_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
     void updateDisplayUnit();
-    void showMenu(const QPoint &);
+    void showMenu(const QPoint &point);
     void copyLabel();
     void copyMessage();
     void copyAmount();