First runnable prototype.

code/MessengerBroker.Configuration/Model/Servers/MasterServer.cs

@@ -11,5 +11,10 @@ namespace MessengerBroker.Configuration.Model.Servers
         /// Url of the Broker API we use to download the data.
         /// </summary>
         public string BrokerUrl { get; set; }
+
+        public override string ToString()
+        {
+            return $"{this.Name} ({this.BrokerUrl}, ID {this.BrokerId})";
+        }
     }
 }