- replace double-quotes with single-quotes whenever appropriate
- fix indentation

- fix indentation
- get it nearer than similar server/lib/ files

Added the configuration variable $conf['demo_mode'] in the config.inc.php file. It disables the newly introduced demo mode which limits certain actions in the interface part of ispconfig: the demo mode can be used to run the ispconfig interface part as online demo.

- Better default settings for the "Normal" spamfilter policy.

Added a option to debug the language files (show strings that are not contained in the lang file surrounded by #....#)
Fixed: FS#1063 - Missing language variables in shell user options 

See thread: http://www.howtoforge.com/forums/showthread.php?p=216643

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there is now also a db-version in the new db-table sys_config

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Moved ISPConfig log location for the daemon log to /var/log/ispconfig/ispconfig.log and added the logfile as option to the logfile viewer in the monitoring module.

- Added a form to change the language and password of the current user.

Updated the Debian installation instructions.

Added a server module for clients and a mail plugin.

2.) included missing configurations in config.inc.php.master
3.) disabled header & ini_set for shell actions in config.inc.php.master