Fix admin route access and backend configuration

- Added /admin redirect to login page in nginx config
- Fixed backend server.js route ordering for proper admin handling
- Updated authentication middleware and routes
- Added user management routes
- Configured PostgreSQL integration
- Updated environment configuration

ViewComponents/FooterPagesViewComponent.cs

@@ -0,0 +1,25 @@
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using SkyArtShop.Models;
+using SkyArtShop.Services;
+
+namespace SkyArtShop.ViewComponents;
+
+public class FooterPagesViewComponent : ViewComponent
+{
+	private readonly PostgreSQLService _pgService;
+
+	public FooterPagesViewComponent(PostgreSQLService pgService)
+	{
+		_pgService = pgService;
+	}
+
+	public async Task<IViewComponentResult> InvokeAsync()
+	{
+		return View((from p in await _pgService.GetAllAsync<Page>("Pages")
+			where p.IsActive
+			orderby p.PageName
+			select p).ToList());
+	}
+}

ViewComponents/NavigationViewComponent.cs

@@ -0,0 +1,36 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using SkyArtShop.Models;
+using SkyArtShop.Services;
+
+namespace SkyArtShop.ViewComponents;
+
+public class NavigationViewComponent : ViewComponent
+{
+	private readonly PostgreSQLService _pgService;
+
+	public NavigationViewComponent(PostgreSQLService pgService)
+	{
+		_pgService = pgService;
+	}
+
+	public async Task<IViewComponentResult> InvokeAsync(string location = "navbar")
+	{
+		List<MenuItem> source = await _pgService.GetAllAsync<MenuItem>("MenuItems");
+		if (location == "dropdown")
+		{
+			List<MenuItem> model = (from m in source
+				where m.IsActive && m.ShowInDropdown
+				orderby m.DisplayOrder
+				select m).ToList();
+			return View(model);
+		}
+		List<MenuItem> model2 = (from m in source
+			where m.IsActive && m.ShowInNavbar
+			orderby m.DisplayOrder
+			select m).ToList();
+		return View(model2);
+	}
+}