Plugin settings - Restart Artemis for plugins that require admin rights

Setup wizard - Restart Artemis device providers that require admin rights
Setup wizard - Gracefully handle errors during device provider enable
Profile editor - Select a valid default brush on clean installs

src/Artemis.UI/Screens/StartupWizard/StartupWizardViewModel.cs

@@ -2,18 +2,22 @@
 using Artemis.Core;
 using Artemis.Core.Services;
 using Artemis.UI.Screens.StartupWizard.Steps;
+using Artemis.UI.Shared.Services;
 using MaterialDesignExtensions.Controllers;
 using MaterialDesignExtensions.Controls;
+using MaterialDesignThemes.Wpf;
 using Stylet;
 
 namespace Artemis.UI.Screens.StartupWizard
 {
     public class StartupWizardViewModel : Conductor<Screen>.Collection.OneActive
     {
+        private readonly IMessageService _messageService;
         private readonly ISettingsService _settingsService;
         private StepperController _stepperController;
 
         public StartupWizardViewModel(ISettingsService settingsService,
+            IMessageService messageService,
             WelcomeStepViewModel welcome,
             DevicesStepViewModel devices,
             LayoutStepViewModel layout,
@@ -21,6 +25,7 @@ namespace Artemis.UI.Screens.StartupWizard
             FinishStepViewModel finish)
         {
             _settingsService = settingsService;
+            _messageService = messageService;
             Items.Add(welcome);
             Items.Add(devices);
             Items.Add(layout);
@@ -30,6 +35,8 @@ namespace Artemis.UI.Screens.StartupWizard
             ActiveItem = Items.First();
         }
 
+        public ISnackbarMessageQueue MainMessageQueue { get; set; }
+
         public void ActiveStepChanged(object sender, ActiveStepChangedEventArgs e)
         {
             Stepper stepper = (Stepper) sender;
@@ -40,22 +47,23 @@ namespace Artemis.UI.Screens.StartupWizard
         }
 
         public void SkipOrFinishWizard()
-        {
-            RequestClose();
-        }
-
-        protected override void OnClose()
         {
             PluginSetting<bool> setting = _settingsService.GetSetting("UI.SetupWizardCompleted", false);
             setting.Value = true;
             setting.Save();
 
-            base.OnClose();
+            RequestClose();
         }
-        
+
         public void Continue()
         {
             _stepperController.Continue();
         }
+
+        protected override void OnInitialActivate()
+        {
+            MainMessageQueue = _messageService.MainMessageQueue;
+            base.OnInitialActivate();
+        }
     }
 }