Avoid symlink() error if acme conf already exists as a file.

See merge request !1587

Merge branch '6312-fix-compatibility-issues-on-systems-with-php-5-centos-7-systems-2' into 'develop'

Resolve "Fix compatibility issues on systems running php5"

Closes #6312 and #6310

See merge request !1588

Merge branch '6311-add-warning-to-update-script-when-incorrect-php-version-is-used-as-default' into 'develop'

Resolve "Add warning to update script when incorrect PHP version is used as default"

Closes #6311

See merge request !1589

Resolve "Line breaks in ispconfig.log"

Closes #6309

See merge request !1586

remote api permissions for acme proxy

Closes #6307

See merge request ispconfig/ispconfig3!1585

Resolve "Incorrect template name for new AppArmor template"

Closes #6306

See merge request !1583

Add function to configure AppArmor (needed to allow use of /etc/bind for zone files) (#6701)

Closes #6071

See merge request !1582

feat: Add filename/line data to DEBUG messages

Closes #6302

See merge request !1580

Merge branch '6302-slightly-improved-debug-logging' of git.ispconfig.org:GwynethLlewelyn/ispconfig3 into 6302-slightly-improved-debug-logging

There may be no guarantee that `$caller[...]` is actually set, or that
either `file` or `line` are not empty.

Marius Burkard authored Mar 19, 2022 and Gwyneth Llewelyn committed Mar 19, 2022

Good point; I'd even use `!empty($caller['file']) && !empty($caller['line'])` to save a few cycles in the (improbable) case where both _may_ be set, but empty (thus making the whole exercise pointless...).

Resolve "Allow special characters in folder name when using e-mail filter"

Closes #6270

See merge request !1581

Merge branch '6301-delete-ssl-cert-symlinks-in-website-ssl-folder-when-acme-sh-is-used' into 'develop'

Resolve "Delete SSL cert symlinks in website ssl folder when acme.sh is used"

Closes #6301

See merge request !1578

Also, tried to clean up the code formatting according to the guidelines
_and_ added (most) entries for PHPDoc.

Update ispconfig.js

Closes #6297

See merge request !1577

Develop

See merge request !1576

6284 confidential issue

See merge request ispconfig-confidential/ispconfig3!7

Resolve "Add socket timeout when querying EU VAT-ID verification server"

Closes #6266

See merge request !1546

Prevent unprivileged users from accessing or flushing the postfix mail queue

See merge request ispconfig-confidential/ispconfig3!6

6296 confidential issue

See merge request ispconfig-confidential/ispconfig3!8

Resolve "Error viewing the table in the section "help: manage question""

Closes #6293

See merge request !1560