Zabbix

..F....... [ZBX-18695] fixed file_put_contents() runtime error if web server has no write permissions for zabbix.conf.php

* commit 'afe2496202b134ad4e9e6597bbd97b6ca4629a8b':
  ..F....... [ZBX-18695] improved coding style
  ..F....... [ZBX-18695] fixed file_put_contents() runtime error if web server has only read permissions to zabbix.conf.php
  .D........ [ZBX-18695] added ChangeLog file
  ..F....... [ZBX-18695] fixed file_put_contents() runtime error if web server has no write permissions for zabbix.conf.php

(cherry picked from commit 405238dd402b6dac6b874b4df01b8486a6f9fd36)
(cherry picked from commit 00624beeed8c9f5120ee8013cbc548d07eebf3d4)