Move to new library model and view

- Add new listview control for library content
- Migrate library providers to containers
  - Cloud, Sqlite, Directories, Queue, History
- Migrate SideBar components to containers
  - Primatives, Text, Braille, ImageConverter
- Create new library container types
  - Zip files, Calibration parts, Printer SDCards
- Reduce leftnav to Library, Settings, Controls, Options
- Add DragDrop support for image content

PartPreviewWindow/View3D/Gui3D/SelectionShadow.cs

@@ -123,7 +123,8 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 				AxisAlignedBoundingBox selectedBounds = MeshViewerToDrawWith.Scene.SelectedItem.GetAxisAlignedBoundingBox(Matrix4X4.Identity);
 
 				var withScale = Matrix4X4.CreateScale(selectedBounds.XSize, selectedBounds.YSize, 1) * TotalTransform;
-				bool authorized = true;
+
+				bool authorized = view3DWidget?.ActiveSelectionEditor.Unlocked == true;
 				if (authorized)
 				{
 					GLHelper.Render(GetNormalShadowMesh(), new RGBA_Bytes(shadowColor, shadowAlpha), withScale, RenderTypes.Shaded);