refact and login

src/Yavsc.Server/Models/Messaging/CircleEvent.cs

@@ -36,7 +36,7 @@ namespace Yavsc.Models.Messaging
 		/// Gets or sets the circles.
 		/// </summary>
 		/// <value>The circles.</value>
-		[YaRequired, Display(Name="Circles")]
+		[Required, Display(Name="Circles")]
 		public virtual List<Circle> Circles{ get; set; }
 
         public override string CreateBody()

src/Yavsc.Server/Models/Messaging/DimissClicked.cs

@@ -7,13 +7,13 @@ namespace Yavsc.Models.Messaging
 {
     public class DismissClicked
     {
-        [YaRequired]
+        [Required]
         public string UserId { get; set; }
         
         [ForeignKey("UserId")]
         public virtual ApplicationUser User { get; set; }
 
-        [YaRequired]
+        [Required]
         public long NotificationId { get; set; }
 
         [ForeignKey("NotificationId")]

src/Yavsc.Server/Models/Messaging/LiveFlow.cs

@@ -41,7 +41,7 @@ namespace Yavsc.Models.Streaming
       [Display(Name="SequenceNumberLabel", ResourceType=typeof(LiveFlow))]
       public int SequenceNumber { get; set; }
 
-      [YaRequired]
+      [Required]
       [Display(Name="OwnerIdLabel", ResourceType=typeof(LiveFlow))]
       public string OwnerId {get; set; }