update issue to drone

src/Banquale/Banquale/Model/Consultant.cs

@@ -1,9 +1,12 @@
 using System;
+using System.Runtime.Serialization;
+
 namespace Banquale.Model
 {
+    [DataContract]
     public class Consultant : Person
 	{
-
+        [DataMember]
         public List<Message> MessagesList = new List<Message>();
 
         public Consultant(string name, string firstName, uint id, string password) : base(name, firstName, id, password)

src/Banquale/Banquale/Model/Message.cs

@@ -1,11 +1,15 @@
 using System;
+using System.Runtime.Serialization;
+
 namespace Banquale.Model
 {
+    [DataContract]
     public class Message
 	{
-
+        [DataMember]
         public string Subject { get; private set; }
 
+        [DataMember]
         public string Description { get; private set; }
 
         public Message(string subject, string description)