More fixes to make the translation work (#2439)

* more fixes to make the translation work

* If size is disabled, it will not appear on the patches screen

* Update game_install_dialog.h

src/qt_gui/game_install_dialog.h

@@ -11,6 +11,7 @@
 class QLineEdit;
 
 class GameInstallDialog final : public QDialog {
+    Q_OBJECT
 public:
     GameInstallDialog();
     ~GameInstallDialog();