LDEV-4109: Adding explicit comment style rating support to Peer Review. Also fixed problem with working out whether it was the first, second, last, etc rating which was causing the wrong combination of next/prev/continue buttons to be displayed.
LDEV-4109: Adding explicit comment style rating support to Peer Review. LDEV-4112: Fixing the previous button - was not detecting the prev case properly and always redisplaying the same screen.
LDEV-4109: Adding explicit comment style rating support to Peer Review. Also fixed a couple of counts that were not calculating correctly - the number of ratings done was being reported on all criteria in the lesson, not the individual criteria.
LDEV-4032 Non-leaders should be forced to wait for leaders to submit notebook and burning questions. Therefore they should not be allowed to press Finish button before these events.