- nginx: changed default PHP-FPM values (pm_max_children, pm_start_servers, pm_min_spare_servers, pm_max_spare_servers).

- Added "actions" framework in server to replace the functions provided by the core modules
- Moved system update function from remoteactins core module to software update plugin.

Added dns_zone_get_id function get id from domain name. To discover a domain id passing domain name as argument.

replaced "listen ... ssl;" through "ssl on;" in nginx (ispconfig.vhost) in case that ssl is used for ispconfig

and make changes to mysql users in the mysql plugin module.

Refs: 1722

the onUpdate thought we were trying to change the Website because the Options
Datalog didn't have the parent_domain_id and the Ftp User tab did.

use the standardize app->db->quote method already established.

Refs: 1722

Also removed the calls to the db closeConn calls in favor of
destryong the connections on the class __destruct() 's..

Since firebird db had a closeConn as well, changed its __destruct
to calls its own personal closeConn which otherwise left unmodified.

Refs: 1722

Fixed: PHP Fatal error:  Cannot use string offset as an array in /tmp/trunk/install/lib/installer_base.lib.php on line 638

- Fixed UTF-8 support in email function.

  @param  -> session_id
  @return -> Array of all Client IDs on server