Optimize view of machines admin page.

cicm_web/Areas/Admin/Models/MachineViewModel.cs

@@ -0,0 +1,27 @@
+using System;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using Cicm.Database;
+
+namespace cicm_web.Areas.Admin.Models
+{
+    public class MachineViewModel
+    {
+        public int Id { get; set; }
+        [StringLength(255)]
+        public string Name { get;      set; }
+        public MachineType Type { get; set; }
+        [DisplayFormat(DataFormatString = "{0:d}")]
+        [DataType(DataType.Date)]
+        public DateTime? Introduced { get; set; }
+        public string Family { get;        set; }
+        [StringLength(50)]
+        public string Model { get; set; }
+
+        public string Company { get; set; }
+
+        [DisplayName("Introduced")]
+        public string IntroducedView =>
+            Introduced == DateTime.MinValue ? "Prototype" : Introduced?.ToShortDateString() ?? "Unknown";
+    }
+}