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- Apps vhost: To access phpMyAdmin/SquirrelMail, the default user (like www-data on Debin/Ubuntu) must be used; fixes #1773.

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

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- Fedora installer: create a symlink from /usr/share/phpmyadmin to /usr/share/phpMyAdmin (nginx only).

- 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.

- Changed FastCGI buffers for ISPConfig nginx vhost because otherwise you get "upstream sent too big header while reading response header from upstream" on OpenSUSE.
- Added 502 error page ("Bad Gateway").
- Added "fastcgi_intercept_errors on;" to nginx vhost template so that ISPConfig's error pages are displayed instead of the default nginx ones.

- OpenSUSE: check if the line "include /etc/nginx/sites-enabled/*.vhost;" exists in /etc/nginx/nginx.conf before it is inserted (installation).

- Removed ufw configuration from installer to avoid "PHP Notice:  Undefined index: ufw in /tmp/trunk/install/install.php on line 251".
- Changed phpMyAdmin location in ISPConfig nginx vhost to allow phpmyadmin and phpmyadmin/ (with and without trailing slash).

- I had to remove the fail2ban caonfig for now as its incomplete and adds rules for dovecot on courier systems.
It is planned to add a complete fail2ban configuration in one of the next releases.

- 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.

- Added empty function configure_fail2ban() to get rid of the following fatal error during installation on non-Debian/Ubuntu systems: PHP Fatal error:  Call to undefined method installer::configure_fail2ban() in /tmp/trunk/install/install.php on line 266

- Added support for the /etc/nginx/sites-available and /etc/nginx/sites-enabled directories on Fedora/CentOS to the installer.

- Fixed "PHP Notice:  Undefined property: installer::$ispconfig_interface_installed in /tmp/trunk/install/update.php on line 337" when updating an ISPConfig server with nginx.