some changes

src/Yavsc.Server/Models/Auth/GoogleCloudMobileDeclaration.cs

@@ -7,7 +7,7 @@ namespace Yavsc.Models.Identity
 {
   [JsonObject]
 
-  public class GoogleCloudMobileDeclaration {
+  public class GoogleCloudMobileDeclaration : IGCMDeclaration {
 
     [Required]
     public string GCMRegistrationId { get; set; }
@@ -33,7 +33,7 @@ namespace Yavsc.Models.Identity
     /// In order to say, is any activity has changed here.
     /// </summary>
     /// <returns></returns>
-    public DateTime LatestActivityUpdate { get; set; }
+    public DateTime ? LatestActivityUpdate { get; set; }
 
     [JsonIgnore,ForeignKey("DeviceOwnerId")]
     public virtual ApplicationUser DeviceOwner { get; set; }

src/Yavsc.Server/Models/Identity/BlackListedUserName.cs

@@ -1,12 +0,0 @@
-using System.ComponentModel.DataAnnotations;
-
-namespace Yavsc.Models.Identity
-{
-    public class BlackListedUserName : IWatchedUserName {
-
-        [Key]
-        [StringLength(1024)]
-        public string Name { get; set;}
-
-    }
-}

src/Yavsc.Server/Models/Identity/IWatchedUserName.cs

@@ -1,8 +0,0 @@
-using Yavsc.Interfaces;
-
-namespace Yavsc.Models.Identity
-{
-    public interface IWatchedUserName : INamedObject {
-
-    }
-}

src/Yavsc.Server/Models/Identity/ReservedUserName.cs

@@ -1,12 +0,0 @@
-using System.ComponentModel.DataAnnotations;
-
-namespace Yavsc.Models.Identity
-{
-    public class ReservedUserName : IWatchedUserName {
-
-        [Key]
-        [StringLength(1024)]
-        public string Name { get; set;}
-
-    }
-}

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

@@ -1,7 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using Yavsc.Abstract.Streaming;
-using Yavsc.Models;
 
 namespace Yavsc.Models.Streaming
 {