ui: Errorview

Tabbed view with errorview as tab

src/lib_gui/qt/window/QtStartScreen.cpp

@@ -78,6 +78,7 @@ QtStartScreen::QtStartScreen(QWidget *parent)
 	: QtWindow(parent)
 {
 	this->raise();
+	setWindowModality(Qt::ApplicationModal);
 }
 
 QSize QtStartScreen::sizeHint() const