Added: FS#687 - Add a replication and mirroring mode for server settings

interface/web/admin/form/server.tform.php

interface/web/admin/lib/lang/en_server.lng

interface/web/admin/server_edit.php

interface/web/admin/templates/server_edit_services.htm

interface/web/dns/form/dns_soa.tform.php

interface/web/mail/form/mail_blacklist.tform.php

interface/web/mail/form/mail_content_filter.tform.php

interface/web/mail/form/mail_domain.tform.php

interface/web/mail/form/mail_get.tform.php

interface/web/mail/form/mail_transport.tform.php

interface/web/mail/form/spamfilter_blacklist.tform.php

interface/web/mail/form/spamfilter_users.tform.php

interface/web/mail/form/spamfilter_whitelist.tform.php

interface/web/sites/form/cron.tform.php

interface/web/sites/form/database.tform.php

interface/web/sites/form/ftp_user.tform.php

interface/web/sites/form/shell_user.tform.php

interface/web/sites/form/web_aliasdomain.tform.php

interface/web/sites/form/web_domain.tform.php

interface/web/sites/form/web_subdomain.tform.php