ui: Fixed issues related to refresh

* don't clear single file code view on ui refresh
* don't refresh ui when clicking refresh
* do ui refresh with Alt + Refresh

src/lib/Application.cpp

@@ -293,13 +293,13 @@ void Application::handleMessage(MessageRefresh* message)
 {
 	TRACE("app refresh");
 
-	if (message->loadStyle)
+	if (m_hasGUI && message->uiOnly)
 	{
-		loadStyle(ApplicationSettings::getInstance()->getColorSchemePath());
-	}
+		if (message->loadStyle)
+		{
+			loadStyle(ApplicationSettings::getInstance()->getColorSchemePath());
+		}
 
-	if (m_hasGUI)
-	{
 		m_mainView->refreshView();
 		m_componentManager->refreshViews();
 	}

src/lib_gui/qt/window/QtMainWindow.cpp

@@ -641,7 +641,14 @@ void QtMainWindow::closeWindow()
 
 void QtMainWindow::refresh()
 {
-	MessageRefresh().dispatch();
+	if (Qt::KeyboardModifier::AltModifier & QApplication::keyboardModifiers())
+	{
+		MessageRefresh().refreshUiOnly().dispatch();
+	}
+	else
+	{
+		MessageRefresh().dispatch();
+	}
 }
 
 void QtMainWindow::forceRefresh()