Circles, pub & auth

* Adds a boolean to each Circle, saying that
  it is public, and its existence may be known by any interested in
* Adds claims of type "YavscClaimTypes.CircleMembership" at
  login, in order to implement some faster authorisation processes and file restricted accesses.

src/Yavsc.Server/Models/ApplicationUser.cs

@@ -109,6 +109,9 @@ namespace Yavsc.Models
         [JsonIgnore][InverseProperty("User")]
         public virtual List<ChatRoomAccess> RoomAccess { get; set; }
 
+        [JsonIgnore][InverseProperty("Member")]
+        public virtual List<CircleMember> Membership { get; set; }
+
         public DateTime DateCreated
         {
             get; set;

src/Yavsc.Server/Models/Relationship/Circle.cs

@@ -7,9 +7,12 @@ using Newtonsoft.Json;
 namespace Yavsc.Models.Relationship
 {
     public class Circle {
+        
         [Key, DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
         public long Id { get; set; }
 
+        public bool Public { get; set; }
+
         public string Name { get; set; }
         public string OwnerId { get; set; }
 

src/Yavsc.Server/Models/Relationship/CircleMember.cs

@@ -13,6 +13,7 @@ namespace Yavsc.Models.Relationship
 
         [ForeignKey("CircleId")]
         public virtual Circle Circle { get; set; }
+        
         [Required]
         public string MemberId { get; set; }