nginx cgi bugfix

See merge request ispconfig/ispconfig3!793

nginx: allow cgi execution under protected folder
nginx: allow protected folder under cgi-bin folder

Add new file to display current kernel info.

See merge request ispconfig/ispconfig3!791

Update show_sys_state.php  to display current kernel info.

See merge request ispconfig/ispconfig3!790

Add new file to display current kernel info. Related to comment ispconfig/ispconfig3!789 (comment 63987)

Update show_sys_state.php  to display current kernel info. Related to comment ispconfig/ispconfig3!789 (comment 63987)

Optimized prosody configuration and full OMEMO support

See merge request ispconfig/ispconfig3!785

Add description text for logging options.

Optimized prosody configuration for full conversations.im feature compartibility including full OMEMO support

update logrotate

See merge request ispconfig/ispconfig3!784

Stable 3.1

See merge request ispconfig/ispconfig3!783

update_record_permissions() isn't callable via API as it has no session_id in its params

See merge request ispconfig/ispconfig3!780

fixed checkbox in dmarc template

See merge request ispconfig/ispconfig3!781

Typo in the language files where delivered was misspelled delievered

See merge request ispconfig/ispconfig3!782