php 5.4 fixes + bugfix interface/web/admin/list/remote_user.list.php ['table_idx'] from userid to remote_userid

- Improved support for multiple PHP versions. Additional PHP versions have now their own form and database table.

- 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 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.

Implemented: FS#1113 - Force client to use only allowed IPs

1) Edit a domain: The selected domain is also selected in the dropdown-list
2) Edit a domain: The admin can now select any domain not only his/her

Fixed a bug: if the domain-module is used and there are NO domains in the list, then the user was able to free edit the domain-name. This bug is fixed now and a empty list is generated, so the user can enter only a empty name!

Added a new module called "domain". With this module you can manage all domains (web + mail). Per default this module is not active. To activate it, you have to change the System Interface Config -> domains -> use the domain module. You also have to activate the domain-module for the admin (and for every client if you want). Important: you can not use this module if you have reseller!

Fixed: FS#1118 - [client_id] is not resolved in .php-fcgi-starter

Additionally fixed a bug in web quota calculation.

Added a global default for the .htaccess allow_override setting.