Zabbix

..F....... [ZBX-19105] fixed value map name uniqueness validation in host edit form

Merge in ZBX/zabbix from feature/ZBX-19105-5.3 to master

* commit '9c946bad0a3707de123edb0467384366bfc50009':
  .D........ [ZBX-19105] added changelog entry
  ..F....... [ZBX-19105] fixed code style; fixed value mapping update
  ..F....... [ZBX-19105] fixed value map name uniqueness validation in host edit form

(cherry picked from commit b63a24435e0e3750dd5b853a79462de330152aaa)