Separate translations for cards in Recycle Bin and cards count.

client/components/lists/listHeader.jade

@@ -17,7 +17,7 @@ template(name="listHeader")
         if showCardsCountForList cards.count
           = cards.count
           span
-            |  {{_ 'cards'}}
+            |  {{_ 'cards-count'}}
       if isMiniScreen
         if currentList
           if isWatching