Redesigned sidebar

Removed dependency on Mahapps, ControlzEx and Dragablz

src/Artemis.UI/Screens/Workshop/WorkshopViewModel.cs

@@ -1,14 +1,21 @@
 using System.Windows.Media;
+using MaterialDesignThemes.Wpf;
 using Stylet;
 
 namespace Artemis.UI.Screens.Workshop
 {
-    public class WorkshopViewModel : Screen, IScreenViewModel
+    public class WorkshopViewModel : MainScreenViewModel
     {
+        public WorkshopViewModel()
+        {
+            DisplayName = "Workshop";
+            DisplayIcon = PackIconKind.TestTube;
+            DisplayOrder = 3;
+        }
+
         public Color TestColor { get; set; }
         public bool TestPopupOpen { get; set; }
-        public string Title => "Workshop";
-
+        
         public void UpdateValues()
         {
             TestPopupOpen = !TestPopupOpen;