Add bandwidth saving feature to sdata transmissions
work on science cosmetics
remove some unneeded client code from science screen

Now this is done server side
Make starbases show up

Now I remember why I had the request_sdata packet.  Things which
never update otherwise never send sdata.  Didn't put the sdata
request back, but now even if something doesn't need an update,
15% of the time, it will update anyway.