Refactor show page

I've refactored the show.html.erb page to build up the board using two loops. I created a sample game using Ilya's instructions and tested it using the url "/games/1" and it appeared to display correctly. Hopefully I didn't miss any key features out!

Rehan
This is so much better than before.  Awesome work! :)

This multi-line if statement in the view is generally considered bad to do.  Things like this start to come up when there are more and more complicated view logic.

Here, if you put a function in the file, `app/helpers/application_helper.rb`, you can call it from the view.  So in that file something like:

```
def tile_color(first_tile_white, column)
                if first_tile_white
					return column % 2 == 0 ? "white" : "black info"
				else
					return column % 2 == 0 ? "black info" : "white"
				end
end
```

Then you can tighten up your view and just call that method directly.