Refactor nav pages, add page to see users of the server

BTCPayServer/Controllers/ServerController.cs

@@ -0,0 +1,34 @@
+using BTCPayServer.Models;
+using BTCPayServer.Models.ServerViewModels;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Controllers
+{
+	public class ServerController : Controller
+	{
+		private UserManager<ApplicationUser> _UserManager;
+
+		public ServerController(UserManager<ApplicationUser> userManager)
+		{
+			_UserManager = userManager;
+		}
+
+		[Route("server/users")]
+		public IActionResult ListUsers()
+		{
+			var users = new UsersViewModel();
+			users.Users
+				= _UserManager.Users.Select(u => new UsersViewModel.UserViewModel()
+				{
+					Name = u.UserName,
+					Email = u.Email
+				}).ToList();
+			return View(users);
+		}
+	}
+}