Fixed: PHP notice in tform_actions.inc.php

fixed #681 - removed all onblur, checked onchange for function and removed it in filter panels. Added jquery keypress (event 13 -> enter) and tested it in different browsers

- Added a new IP validator to the tform library which validates IPv4 and IPv6 addresses.

- 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.

Fixed: FS#1709 - Wrong message "Your hard-disk space is going full" in the "Monitor -> Show Disk Usage"

Fixed: FS#1623 - vhost.conf.master placed in /root overrides vhost.conf.master in ispconfig/server/conf

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