Added a server module for clients and a mail plugin.

* Cleanup some stuff into login/index.php like globals
* Add errors to the lang files

- Updated todo text

- added a daily cronjob for stats creation in the installer.
- Fixed a bug in the spamfilter white / blacklist forms (thanks to satommy for reporting this)
- fixed ssl cert path in vhost templates/web_domain_ssl.htm
- fixed a bug in the apache plugin which prevented the copying of the standard error and index files.

- enhanced the documentation

Updated apache ssl cert creation.

2.) Cleaned up update.php
3.) Changed definitions for quarantine settings
4.) Commented out areas for quarantining 'clean' and 'other' 

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

* Made parts php5
* Other minor tweaks

Pedro makes the code look like its a PEAR, sorry adam. Aalso enquring for interface and sanity checks"