Real space for layer editor

This makes the real space view (3D) available from the layer oriented sample editor

This fixes #143 (closed)

GUI/View/Common/DocksController.cpp

@@ -120,6 +120,12 @@ void DocksController::toggleDock(int id)
         dock->setHidden(!dock->isHidden());
 }
 
+void DocksController::setDockVisible(int id, bool visible)
+{
+    if (auto dock = findDock(id))
+        dock->setHidden(!visible);
+}
+
 QDockWidget* DocksController::findDock(int id)
 {
     if (m_docks.find(id) == m_docks.end())