Send: dialog redesign (automatically look up label for entered address)

src/qt/sendcoinsdialog.h

@@ -23,7 +23,7 @@ private:
     WalletModel *model;
 
 private slots:
-    void on_addToAddressBook_toggled(bool checked);
+    void on_payTo_textChanged(const QString &address);
     void on_buttonBox_rejected();
     void on_addressBookButton_clicked();
     void on_pasteButton_clicked();