Back button on build screen

[fieryspoon]

I think the "back" button on production tab should just be the planet icon, since most of the time I'm going directly to that screen from the sector view. "Back" just doesn't make any sense in that context, and since you're using the factory icon from the planet view to get to that screen, I think it would be more consistent just to use the planet button to go from the factory view to the planet view.

[zarkwizard]

Good point. I'll make that change. It will be easy enough.