v3.4.5

[FIXED] PHP 8.x compatibility fixes - warnings on post preview
[FIXED] PHP 8.x compatibility fixes - saving usergroup permissions
[FIXED] Member profile page - thank you/like box - parse text correctly
[FIXED] {1} not being replaced in jGrowl popup messages
[FIXED] Correct $db->query() to $db->write_query() as necessary
[IMPROVED] Rationalise new setting/lang names; remove error log file
[IMPROVED] Add the tyl_tnumtyls column back in
[IMPROVED] Add a setting to toggle core template changes

Thank you @lairdshaw !!!