Improved italian translation



See merge request !591

Update it_strengthmeter.lng

Improved translation.

See merge request !587

Update it.lng

Improved translation

See merge request !588

Update sites_database_user_add.php, fix typo

Remote API fixes

See merge request !589

fixing parent website param



See merge request !590

update databse - strict_mode compatible (https://www.howtoforge.com/community/th…

…reads/email-warning-after-modification-of-spam-level.76247/)

See merge request !586

update databse - strict_mode compatible (https://www.howtoforge.com/community/threads/email-warning-after-modification-of-spam-level.76247/)

fix onSubmit in mail_user_edit



See merge request !583

handle the server/plugins-enabled folder based on enabled/disbaled services



See merge request !582

change password-defaults to pass https://mariadb.com/kb/en/mariadb/simple_password_check/



See merge request !581

fix nginx redirects section

It seems that the "redirects" section of the nginx vhost master template contains obsolete code that was not updated (in comparison with other parts of this template). This commit is intended to fix the following errors:

*  the redirects section doesn't respect the nginx port settings of ISPConfig (it uses hard-coded values 80 and 443 only)
* the redirects section doesn't respect the HTTP2/SPDY settings
* the redirects section doesn't define the standard SSL protocols that ISPConfig uses everywhere else
* the redirects section contains invalid path for SSL certificate files (closes #4472, closes #3302)

See merge request !580