Improvements:
[system] kernel updates, fixed the following vulnerabilities: CVE-2019-11477, CVE-2019-11478, CVE-2019-11479
Bugfixes:
[webgui] fixed activation certificate format
[webgui] fixed error disabling/enabling farmguardian
[webgui] factory reset button enabled
[webgui] delete an action if del button in keyboard is pressed for WAF