Zabbix

..F....... [ZBX-19176] fixed multiple performance issues in map navigation tree widget and map

Merge in ZBX/zabbix from feature/ZBX-19176-5.0 to release/5.0

* commit '4eac3affbe9cbde05b3fcc8d162fed51724fc80f':
  .D........ [ZBX-19176] added changelog
  ..F....... [ZBX-19176] improved performance
  ..F....... [ZBX-19176] reverted unneeded change
  ..F....... [ZBX-19176] fixed some performance issues