*8910* Improved handling of review step tabs

Pull request for: http://pkp.sfu.ca/bugzilla/show_bug.cgi?id=8910
That's correct. Previously it was set up that you could only directly access 1 or 4 now you can directly access all steps. This is what the request was. The backend code was already set up to support this. I think this had been intended to work like this all along.