Backport from !561

See merge request ispconfig/ispconfig3!1164

Don't tell bind software version

See merge request ispconfig/ispconfig3!1163

Backport from !842

See merge request ispconfig/ispconfig3!1162

Backport from !738

See merge request ispconfig/ispconfig3!1161

Backport from !730

See merge request ispconfig/ispconfig3!1160

Use variable for PHP location (Backport from !711)

See merge request ispconfig/ispconfig3!1159

Always use php 7.0 (Backport from !624)

See merge request ispconfig/ispconfig3!1158

Use port variables instead of hardcoded port (Backport of !580)

See merge request ispconfig/ispconfig3!1155

DNS tabs

Closes #3727

See merge request !1154

Update copyright note

See merge request !1153

Remove unused file (Backport from !549)

See merge request !1152

Put IfModule in tmpl_if

See merge request !1151

Remove unused string

See merge request !1150

Fix typo (Ported from !449)

See merge request !1149

Fix typo in installer

See merge request !1148

Fix bold labels

See merge request !1146

Update installer_base.lib.php to fix the missed svr_ip

See merge request !1147

Add move to system.inc.php

See merge request !1142

- revert CAA checks from !1128 until we have a solid method for getting the correct CAA domain from a host name

Update installer_base.lib.php to fix the missed svr_ip that should have been modified to include both ipv4 and ipv6 in the previous quick fix before 911 ispconfig/ispconfig3!911 proposal was merged.

This caused failure to create LE SSL certs as reported in issue 5731 ispconfig/ispconfig3#5731.

This commit is aimed to fixed the said issue.