Say it once, and say whose scores are hidden

A copy pass over the Finnish UI. The em-dash aside was doing the work of a
second sentence in ten places, so it is a second sentence now, or gone.

The sealed-score wording was wrong twice over: it promised "pisteet" when
only other people's are hidden, and said "kirjoitat" when the reveal
actually happens on save. Both fixed on the queue, the song page and the
card badge.

templates/stats.html

@@ -49,7 +49,7 @@
 {{define "content"}}
 <h1>Tilastot</h1>
 <p class="muted">Kappale pääsee listoille kun sillä on vähintään {{.Data.MinReviews}} arvostelua.
-  Tilastot näkyvät kaikille — täällä pisteitä ei piiloteta.</p>
+  Tilastot näkyvät kaikille.</p>
 
 <div class="boards">
   {{template "songboard" dict "Title" "Parhaat" "Items" .Data.TopSongs}}