Added protobuf support for serializing ServerConfiguration

MediaBrowser.Model/Configuration/BaseApplicationConfiguration.cs

@@ -1,12 +1,19 @@
-
+using ProtoBuf;
+
 namespace MediaBrowser.Model.Configuration
 {
     /// <summary>
     /// Serves as a common base class for the Server and UI application Configurations
+    /// ProtoInclude tells Protobuf about subclasses,
+    /// The number 50 can be any number, so long as it doesn't clash with any of the ProtoMember numbers either here or in subclasses.
     /// </summary>
+    [ProtoContract, ProtoInclude(50, typeof(ServerConfiguration))]
     public class BaseApplicationConfiguration
     {
+        [ProtoMember(1)]
         public bool EnableDebugLevelLogging { get; set; }
+
+        [ProtoMember(2)]
         public int HttpServerPortNumber { get; set; }
 
         public BaseApplicationConfiguration()