Improving session class

This week I still worked on session handling and at the end of the week I started working on serialization/parsing of graphics objects. At the beginning of the week I  splitted WhiteboardSession class into IncomingWhiteboardSession and OutgoingWhiteboardSession. I also changed a little a way of responding to initialization IQs. Now IQ result is send no matter if user accepts or not the session. Here is screencast which presents how everything works: http://www.screencast-o-matic.com/watch/cl1lXDmGj. Later this week I improved a little initialization from the UI side. Here is new screencast showing these improvements: http://www.youtube.com/watch?v=LV4CeYp2GOE (I uploaded it to youtube because previous one doesn't work on my computer). As I said before, at the end of the week I worked on serialization and parsing of graphics elements. I created base code to handle this which at now works with a simple line and which I will extend with more elements.