Changed web folder permissions in nginx setups from 711 to 751 to avoid (false) permissions warnings in log files.

- Enable php-fpm socket mode as default.

Fixed a bug in Opensuse installer (permissions of squirrelmail files)
Fixed a issue in smtp-authentication on courier-imap systems when custom usernames are used.

Updated apache_ispconfig.conf.master to allow access to phpmyadmin and squirrelmail on opensuse 13.1.

 - Reason:
   AddHandler fcgid-script .php
   does not only parse .php files, but all .php.* (e. g. .php.txt, .php.test etc.)

- Fixed FS#3366 - Certain Custom php.ini settings seem to be stripped before being saved to .conf file.

- Updated Linux Distribution detection to recognize all wheezy sub versions correctly.

Changed cron_daily.php to avoid some php notices.