Wikiquote:hu has a category tree for Babel templates, but the Babel extension doesn’t use it. So please modify InitialiseSettings.php as follows:
'wmgBabelCategoryNames'['huwikiquote'] = array( '0' => 'User %code%-0', '1' => 'User %code%-1', '2' => 'User %code%-2', '3' => 'User %code%-3', '4' => 'User %code%-4', '5' => 'User %code%-5', 'N' => 'User %code%-N', ), 'wmgBabelMainCategory'['huwikiquote'] = 'User %code%'
Thanks!