Implemented: FS#2278 - Integrate functions of the domain module into the client module and then remove domain module

- Fixed missing templates and language entries
- Previous subdomain mode can be used concurrently
- Changed log path to a more convenient location

FS#1993 - Creating Subdomains as VirtualHost

Addes some missing translations

Added: Form fields are disabled if a client is not allowed to edit a domains main settings

- Implemented: FS#1935 - Add minimum allowed seconds Value for DNS zone records

Fixed: FS#2378 - $conf['theme'] value in interface/lib/config.inc.php is overwritten (reset to 'default') on update

Fixed: FS#2378 - $conf['theme'] value in interface/lib/config.inc.php is overwritten (reset to 'default') on update

Implemented: FS#2283 - Add O option to dovecot transport in postfix master.cf so that X-Original-To: header is added.

Fixed (partly) FS#2310 - Template switch not working in mailuser module, for dashlets and the login page

Just mailuser fixed

automatically enable remote access and add the webserver's ip to the remote_ips list

- Added missing sys_tpl table to ispconfig3.sql and moved the definition of the table to the upd_0035.sql file as new tables cant be added in existing update files.
- added new ssl_key field to web_domain table.
- cleaned up unused code from apache plugin.

- install: touch auth.log
- login: write success/fail to auth.log
- cron: log rotation for auth.log