Removed @author tags, renamed package

I renamed the package from gameutilities to utilities. I think some other packages should also be changed due to redundant naming... it's just too long, and is a pain to write or such.

I also removed @author tags. This is a group project! And it's on git! This is a team project, not a do the most work contest. And anyway, git history will give you all the credit you need.

It's just not needed! It's a rather arrogant practice anyway, I think.