Zabbix

..F....... [ZBX-16542] fixed incorrect displaying of unacknowledged and resolved recent problematic triggers in trigger overview and dashboard widget

* commit '9cef01d3eb839abe95ac390f99293552b191401b':
  ..F....... [ZBX-16542] fixed acknowledged problem and resolved problem display in overview
  ..F....... [ZBX-16542] fixed undefined index
  .......... [ZBX-16542] added contribution in changelog
  ..F....... [ZBX-16542] removed unnecessary code
  ..F....... [ZBX-16542] fixed request going to dashboard trigger overview and removed unnecessary code
  ..F....... [ZBX-16542] fixed coding style
  ..F....... [ZBX-16542] fixed coding style
  ..F....... [ZBX-16542] refactored code
  ..F....... [ZBX-16542] changed how trigger acknowledgments and severities are displayed in overview page
  ..F....... [ZBX-16542] fixed incorrect displaying of unacknowledged and resolved recent problematic triggers in trigger overview and dashboard widget

(cherry picked from commit 1435067e8ff0fc726925bc9ea7c3075c35a9084e)