Plex elements got their attributes set on class definition

Instead of setting the attributes for eg. a show on the Show instance, it was set on self.__class__ instead. Thus all object class not the element. Thus fx. title was always the same for all Show objects.

Test:

    from server import Server
    server = Server("192.168.0.10", 32400)
    s_shows = server.library.shows[0]
    print s_shows.getContent()