New global option to grant reseller users access to the options (advanced) tab in web domains and vhost subdomains

 - added configuration options to server config (web tab, php section)
 - do not update custom php.inis if md5sum file does not exist

- Added check for the apps vhost to find out if the default PHP-FPM pool uses port 9000 or the socket /var/run/php5-fpm.sock.

avoid 400 bad request error if ssl is enabled and interface is accessed with http instead of https. Instead redirect to the requested page with https at the beginning of the URL.

According to FS#1982

- Implemented session message system (template modifications pending)
- Updated ISPC SVN version number to 3.0.5

- Added overtraffic notifications to traffic quota system (part of FS#2059 - Extend Traffic quota system)

Fixed: FS#2378 - $conf['theme'] value in interface/lib/config.inc.php is overwritten (reset to 'default') on update

This option can be enabled under System > Server config and is named "Web folder protection".

- 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.