nginx cgi bugfix

See merge request !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 !791

Update show_sys_state.php  to display current kernel info.

See merge request !790

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

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

Optimized prosody configuration and full OMEMO support

See merge request !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 !784

Stable 3.1

See merge request !783

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

See merge request !780

fixed checkbox in dmarc template

See merge request !781

Typo in the language files where delivered was misspelled delievered

See merge request !782