Zabbix

A......... [ZBX-25670] restored audit logging of host group links to hosts

* commit 'c816b5a535824d31b8529d82da2b6ecf4207e72a':
  AD........ [ZBX-25670] fixed incorrect audit logging of host unlinking from group; clarified description of ChangeLog entry; fixed coding style issues
  A......... [ZBX-25670] fixed code style
  A......... [ZBX-25670] prevented extra query on no-change update; improved code style
  A......... [ZBX-25670] isolated auditing of host group updates; fixed order of logging
  A......... [ZBX-25670] added auditing of host group updates