refact and login

src/Yavsc.Abstract/Relationship/Location.cs

@@ -8,9 +8,9 @@ namespace Yavsc.Models.Relationship
     public class Location : Position, ILocation {
         [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public long Id { get; set; }
-        [YaRequired(),
+        [Required(),
         Display(Name="Address"),
         MaxLength(512)]
         public string Address { get; set; }
     }
-}
+}

src/Yavsc.Abstract/Relationship/Position.cs

@@ -11,7 +11,7 @@ namespace Yavsc.Models.Relationship
 		/// <summary>
 		/// The longitude.
 		/// </summary>
-        [YaRequired(),Display(Name="Longitude")]
+        [Required(),Display(Name="Longitude")]
         [Range(-180, 360.0)]
 
 		public double Longitude { get; set; }
@@ -20,9 +20,9 @@ namespace Yavsc.Models.Relationship
 		///
 		/// The latitude.
 		/// </summary>
-        [YaRequired(),Display(Name="Latitude")]
+        [Required(),Display(Name="Latitude")]
         [Range(-90, 90 )]
 		public double Latitude { get; set; }
 
 	}
-}
+}