refact + owner required for a circle

src/Yavsc.Abstract/Interfaces/IBaseTrackedEntity.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace Yavsc
+{
+    public interface IBaseTrackedEntity
+    {
+        DateTime DateCreated { get; set; }
+        string UserCreated { get; set; }
+        DateTime DateModified { get; set; }
+        string UserModified { get; set; }
+    }
+}