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.

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

Cleaned and shortened to be more manageable.  There is no reason to keep all that luggage. Also use multi line sql so a human can read it.

- 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.