Space Scanner and Telescope construction ghosts should show interference region

[ChrisBit]

The Space Scanner and Telescope both require a clear view, but it is not obvious to the player exactly which tiles the game considers to be obstructing the view. Also the Space Scanner is influenced by heavy machinery in an unspecified range. I think both these regions should be at least included in the ghost image for construction, but also preferably when the building is selected. Also the need for the space scanner to be a certain distance from the top of the map should be communicated in some way.