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

Utilities/ManifestFileHandler.cs

@@ -27,13 +27,11 @@ of the authors and should not be interpreted as representing official policies,
 either expressed or implied, of the FreeBSD Project.
 */
 
-using MatterHackers.Agg.UI;
-using MatterHackers.MatterControl.DataStorage;
-using MatterHackers.MatterControl.PrintLibrary.Provider;
-using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
 using System.IO;
+using MatterHackers.MatterControl.DataStorage;
+using Newtonsoft.Json;
 
 namespace MatterHackers.MatterControl
 {