fixed pagination indexing

brain/data/Book.inc.php

@@ -63,6 +63,10 @@ class Book
         $limit = count($filtered) - 1;
       }
       $range = $page * $limit - $limit;
+
+      if ($range != 0) {
+        $range = $range + 1;
+      }
       for ($i = 0; $i <= $limit; $i++) {
         if (isset($filtered[$i + $range])) {
           array_push($folder, $filtered[$i + $range]);