You can now re-rate maps

Thanks to a code contribution by AAS, you can now re-rate maps. I know some of you were dying for that feature.

Thanks AAS!

Some time earlier I added the option to see more entries on the log, for example https://www.quaddicted.com/reviews/log.php?number=50

Nice, thanks!

(Though nowhere near as nice as ?number=50, which has completely changed how I use this site.)