Add option "set_folder_permissions_on_update" in server config to configure if folder permissions should be forced on web update.

- Set error reporting level in app inc.

- Select sieve template depending on dovecot version as doevceot 1.0 does not support the new date based autoresponders.
- Cleaned up opensuse dovecot-sql.conf file

- Fixed a problem with german umlauts in monitor.
- Added code to update.php and autoupdate.php that checks the mysql root password before the update starts.
- Fixed: FS#1848 - changing password of ssh user >>> rights in webXX are changed

Fixed: FS#1801 - german specialchars making trouble in logs

- Fixed a warning in apache plugin.

- Fixed bug in nginx plugin: folder protection got written to vhost even if no folder protection was configured.

- Replaced SSH-RSA input field with textarea so that you can put in multiple SSH-RSA keys.

- Make Apache/nginx restart after a site was deleted.
- Make sure the correct symlinks are deleted from the sites-enabled directory when a site is deleted (100-example.com.vhost, 900-example.com.vhost, or example.com.vhost).

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- Installer adds Apache and nginx user to ispapps group.
- Installer makes sure that /var/www/apps has 755 permissions.

- Added PHP-FPM pm settings (pm.max_children, pm.start_servers, pm.min_spare_servers, pm.max_spare_servers) to the "Options" tab of a website.

- Installer adds ispconfig user to Apache group on Fedora/CentOS so that nginx/PHP-FPM can access /etc/squirrelmail and serve SquirrelMail for the ISPConfig vhost.
- Added session.save_path and upload_tmp_dir settings to the PHP-FPM pool definitions.