Fix torrent transfer stats, 2nd try

The constants themselves were also mixed up.

src/webui/btjson.cpp

@@ -88,8 +88,8 @@ static const char KEY_PROP_CREATION_DATE[] = "creation_date";
 static const char KEY_PROP_PIECE_SIZE[] = "piece_size";
 static const char KEY_PROP_COMMENT[] = "comment";
 static const char KEY_PROP_WASTED[] = "total_wasted";
-static const char KEY_PROP_DOWNLOADED[] = "total_uploaded";
-static const char KEY_PROP_UPLOADED[] = "total_downloaded";
+static const char KEY_PROP_UPLOADED[] = "total_uploaded";
+static const char KEY_PROP_DOWNLOADED[] = "total_downloaded";
 static const char KEY_PROP_UP_LIMIT[] = "up_limit";
 static const char KEY_PROP_DL_LIMIT[] = "dl_limit";
 static const char KEY_PROP_TIME_ELAPSED[] = "time_elapsed";