The latest changes to the render window data selection (e.g. {D773}) provide a new concept for selecting data nodes for the render windows (see {T29297}).
As a consequence some `RenderWindow*`-classes needed to be modified, are now obsolete or need to be cleaned even more.
This task should tackle the following:
- `mitkRenderWindowLayerController`, `mitkRenderWindowViewDirectionController` and `mitkRenderWindowLayerUtilities` need to be moved to the Core-module
- the `MitkRenderWindowManagerUI`-module can be removed, if
- we want to remove the `org_mitk_gui_qt_renderwindowmanager`-plugin
- the `QmitkRenderWindowDataStorageTreeModel` and `QmitkRenderWindowContextDataStorageInspector.cpp` can be removed