Feature/admin (#831)

* fix redirect to login for admin page
fix logout

* add admin part url

Co-authored-by: cedri <cedri@BAS>

src/BlazorAdmin/Pages/Logout.razor

@@ -7,7 +7,7 @@
 
     protected override async Task OnInitializedAsync()
     {
-        await HttpClient.PostAsync("Identity/Account/Logout", null);
+        await HttpClient.PostAsync("User/Logout", null);
         await new Route(JSRuntime).RouteOutside("/Identity/Account/Login");
     }