*8910* Improved handling of review step tabs

Pull request for: http://pkp.sfu.ca/bugzilla/show_bug.cgi?id=8910
The idea is, that when a user comes back and after only completing the first 2 review steps, the user wouldn't need to start over from the beginning again. http://pkp.sfu.ca/bugzilla/show_bug.cgi?id=8910#c0