Core update. Base core features are done (main app doesn't compile)

Related Work Items: #416, #422, #423, #424

FoxTube.Core/Utils/Utils.cs

@@ -1,4 +1,5 @@
-using System;
+using FoxTube.Services;
+using System;
 using Windows.ApplicationModel.Core;
 using Windows.Security.Credentials;
 
@@ -25,10 +26,10 @@ namespace FoxTube.Utils
 		public static async void RestartApp(string args) =>
 			await CoreApplication.RequestRestartAsync(args ?? "");
 
-		public static void InitializeFailsafeProtocol()
+		public static async void InitializeFailsafeProtocol()
 		{
 			Metrics.AddEvent("Failsafe protocol initiated");
-			Settings.ResetSettings();
+			await Storage.ResetStorage();
 			PasswordVault passwordVault = new PasswordVault();
 			foreach (PasswordCredential credential in passwordVault.RetrieveAll())
 				passwordVault.Remove(credential);