added null opt 2 hs

allhighscores.php

@@ -15,7 +15,8 @@ $offset = isset($_GET['offset']) ? $_GET['offset'] : 0;
 $db = new Database();
 
 if($cid == -1) {
-    $overview = $db->query('SELECT "name", "highscore" FROM "Users" ORDER BY "highscore" DESC, "name" ASC
+    $overview = $db->query('SELECT "name", COALESCE("highscore", -1) as "highscore"
+      FROM "Users" ORDER BY COALESCE("highscore", -1) DESC, "name" ASC
       LIMIT $1 OFFSET $2', array($limit, $offset))['data'];
     foreach($overview as $row) {
         $name = $row['name'];