ui: Refactored View initialization

* moved initView() implementation where used into constructor
* specify methods as override instead of virtual where applicable
* use default destructors where applicable

src/lib_gui/qt/view/QtCodeView.cpp

@@ -17,19 +17,11 @@ QtCodeView::QtCodeView(ViewLayout* viewLayout)
 	m_widget = new QtCodeNavigator();
 }
 
-QtCodeView::~QtCodeView()
-{
-}
-
 void QtCodeView::createWidgetWrapper()
 {
 	setWidgetWrapper(std::make_shared<QtViewWidgetWrapper>(m_widget));
 }
 
-void QtCodeView::initView()
-{
-}
-
 void QtCodeView::refreshView()
 {
 	if (getController())