fix #1747 - check for amavised for postfix rules -> pure webserver need for php sendmail, most often postfix is used for it, because admin know it. I checked different repos for differnet names, alwas amavsid or with -new.

Removed unused database tables: 

DROP TABLE `mail_greylist`;
DROP TABLE `firewall_filter`;
DROP TABLE `firewall_forward`;
DROP TABLE `proxy_reverse`;

- Added tables for web folder protection.

- Added fields for IPv6 support and virtualhost Port Configuration to server_ip table

- Added Limit fields for openvz in the database
- Limited several vm functions to be used by admin only.

1) Added DEVSYSTEM define in config.inc.php.master  defaults to 0
  If set to 1 classes can load as symbolc links, server.php now

2) server.php now resolves its require()ed files with an absolute
   path instead of relative.

implemented the patch supplied by Jan Vansteenkiste with the latest commit

Added http or https question to normal install (different question, so "newbies" will understand it also.

http://bugtracker.ispconfig.org/index.php?do=details&task_id=221

http://bugtracker.ispconfig.org/index.php?do=details&task_id=1360

http://lathama.net/Recursively_deleting_Microsoft_end_of_line_characters

Fixed: Unknown column 'id_rsa' in 'field list' when password is changed in tools.

can now be set in the localconfig.