Add document base model.

Cicm.Database/Models/DocumentBase.cs

@@ -0,0 +1,18 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+
+namespace Cicm.Database.Models
+{
+    public abstract class DocumentBase : BaseModel<long>
+    {
+        [Required]
+        public string Title { get;       set; }
+        public string NativeTitle { get; set; }
+        [DisplayFormat(DataFormatString = "{0:d}")]
+        [DataType(DataType.Date)]
+        public DateTime? Published { get; set; }
+        public short? CountryId { get;    set; }
+        [MaxLength(262144, ErrorMessage = "Synopsis is too long")]
+        public string Synopsis { get; set; }
+    }
+}