Add roundcube service

see #2986
Implement Roundcube 1.0.x service

see #2986
Test Roundcube 1.0.x proxy

see #2986
Rework php.ini configuration.

see #2986
Add Roundcube php.ini configuration.

see #2986
Test Roundcube nginx proxy.

see #2986
Fix error 'useradd: cannot create directory /var/www/ubuntutest.com' 

Need to create '/var/www/' for nginx service.
see #2986
Add error page statement

see #2998
Add error page to domain for nginx service

finish #2998
Fix Apache tags

see #2986
Fix mysql backup commands

see #2986
Fix permissions

see #2986
Test default properties

see #2986
Configure SMTP

see #2986
Import database unix script

see #2986
Import initial database tables

see #2986
Fix IMAP hosts

see #2986
Set default IMAP settings

see #2986
Configure debug logging

see #2986
Set default IMAP and SMTP auth type to PLAIN

It matches the other mail configuration.
see #2986