* init empty vars to avoid PHP8 warnings
* removed debug output for serendipity_session_destroy()
* init smarty fixed for PHP8
* removed optional parameters for PHP 8
* 2k11 template fixes, maybe updating smarty will solve everything
* init or test undefined variables for PHP 8
* remove only existing files
* make sure string is not empty before comparing the first letter
* check if SMARTY_DIR was already defined
* use mb_language('uni') for unicode
* fixed image filter bug
* Smarty debug fixed in external lib
* fixed archive bug
* fixed entries bug
* updated plugin versions
Co-authored-by: surrim <surrim@happyhydro.org>
Debug-messages still may use echo, and some functions in functions_image and trackback still use it to generate progress messages, which should get cleaned up as well but is not that urgent
The smartified code as forked from master to 2.0 being outsourced,
now is to find in /include/admin/tplold, which will still be used as
the default backend template dir.
To switch to the new version, please paste the dirs and files of s9y-admin-tpl
as adviced in the readme and reload, but also add a
```php
// End of Serendipity configuration file
// You can place your own special variables after here:
define('SWITCH_TEMPLATE_VERSION', 'true');
```
to the end of your serendipity_config_local.inc.php.
To switch back to the old smartified files, just set a // to the define().
