Combine: Independence War: The Starship Simulator

There are currently two pages for the same version of Independence War, one simply titled Independence War and one featuring the game's full title: Independence War: The Starship Simulator, the Independence War page should be merged with the latter, the "Additional Content" section is the only thing that isn't already in the Independence War: The Starship Simulator page, and should be moved to the combined page, since it described the expansion pack and the later U.S. release.

@fisk0: Done.