Zabbix

..F.....S. [ZBX-20158] changed node with empty name to be denoted as standalone server

* commit 'bf0f493e18e85208cefbec0d3a733c236390819f':
  .......... [ZBX-20158] added credit to changelog
  ..F....... [ZBX-20158] delete duplicate changelog entry
  .......... [ZBX-20158] added change-log entry
  ..F....... [ZBX-20158] fixed setup form if wrong step value in the cookies
  ........S. [ZBX-20158] print <standalone server> instead of empty node name when displaying ha status
  ..F....... [ZBX-20158] changed empty node name to be shown as standalone in UI