Zabbix

A......... [ZBX-8999] fixed exporting of images separately from other objects

* commit '11654c35e3adc88e5a8819e71785f3bbd3bdf1fa':
  A......... [ZBX-8999] minor coding style fix
  A......... [ZBX-8999] fixed type-hinting
  ..F....... [ZBX-8999] removed duplicate image IDs
  .......... [ZBX-8999] minor PHPDoc fix
  A......... [ZBX-8999] fixed exporting of images separately from other objects