6.1.5

Bug fix release for 6.1.x series

• adds option to set DB error mode (PHP 8.1 changes defaults, see constants.php)
• use exceptions also for MySQLi driver
• adds indexes to menu and watch table
• disables auto-creation of empty help, terms and privacy page
• adds name_desc to order parameter in files action
• fixes some PHP 8.1 deprecated notices
• miscellaneous minor fixes
• SimplePie 1.5.8