php 5.4 fixes + bugfix interface/web/admin/list/remote_user.list.php ['table_idx'] from userid to remote_userid

- 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.

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

Fixed: FS#1712 - Welcome email in multiserver setup problem (welcome mail not send because MySQL delay)

Using these variables in welcome email from admin, when mailbox is created.

The conversion to iso-8859-1 causes compatibility problems with some languages, therefore the transition to utf-8

Additionally fixed a bug in web quota calculation.

Added Support for Sieve mail filtering language on dovecot servers.

Fixed: FS#943 - ErrorCreating Email Mailbox - possibility co create mailbox name with CAPITALletters 

Check only for active records when performing a duplicate check for mailboxes / aliases / forwarders

Updated version number to 3.0.1.4 and changed sort order to domain name in the mailbox, alias and forward forms.

Improved client and reseller limit checks

Fixed: FS#778 - mailalias has priority over mailbox if they both exist. Added a error message that prevents it to add a alias or forward when a mailbox with the same email address exists.

fix for local characters not encoded properly in welcome-email. remove trailing empty lines from finnish language, again...

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The user can now "jump" to the webmailer and to phpmyadmin direct from within the corresponding list.

- Updated Debian installation instructions.

- Changed shell of website linux user to /bin/false

Fixed: Several php notices for undefined indexes.

Added a server module for clients and a mail plugin.