Added a lot of extra protocolInfo stuff

Added a lot of extra protocol info for thumbnails.
Added hard coded protocol info for the 3 hardcoded transcode options
being handed out at the moment Made sure to set the transode flag in the
protocol info, so we'll see if that helps streaming transcoded content
Added dlna server icons

Added dlna server icons but can't get platinum to accept them without
throwing an exception, so most relevant code is commented out. Will have
to try to fix at a later stage.
Added dlna server icons