Fixed: PHP notices in jailkit user plugin.

- Improved checks in mailbox delete function.

- Improved error message in client and reseller language file.

- Improved date format in nl language file
- Disabled debugging mode in interface plugin class.

- Added a missing string in dns soa edit langauge file.

- Fixed bug in updater that made ispconfig invoices directory unreadable.
- Removed passing of variables by reference in ispconfig monitor.
- Changed monitor of opensuse updates so that the command does not install them automatically.

- Added ispconfigend user and group when user to webid connection is activated.

Fixed: FS#1900 - Check if the membership of the web user in the sshusers group affects pure-ftpd virtualchroot

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- Improved check for vhosts created with the remote API FS#1950
- Fixed: FS#1952 - Folders created by folder protection function belong to the root user
- Fixed website permission settings.
- Add option "set_folder_permissions_on_update" in server config to configure if folder permissions should be forced on web update.
- Fixed: FS#1934 - CentOS 6.1: cgi-bin: wrong folder permissions.
- Fixed: FS#1931 - Domain Rename Causes Vhost error.
- Fixed: FS#1831 - SSL Certificate setup fails unless you've visited the SSL tab in that session.
- Fixed a warning in nginx plugin.

Fixed: FS#1951 - dns: wrong named.conf.local generated with reverse dns delegation for small networks

Add option "set_folder_permissions_on_update" in server config to configure if folder permissions should be forced on web update.