We had some custom styles for the JavaScript unit test pages, which we
had in the original Jasmine stylesheet, rather than overriding in a
separate one. When upgrading Jasmine, the stylesheet changed so much
that we opted to throw those styles out.

This change brings those styles back, giving us a familiar feel for
these pages, but in a way that's maintainable. It also tweaks a few
colors to fit in a little better with the modern look of Review Board.

Tested passing, failed and skipped tests, to see the different forms of

output.