Zabbix

..F....... [ZBX-27836] fixed PHP runtime errors in user role edit form

* commit 'e91a6e9fc94bd88d579ecdb6821dee7909079ccf':
  ..F....... [ZBX-27836] minor coding style fix
  ..F....... [ZBX-27836] reverting commit c6785caa461702b77e77f6954843ec5cf50f2de5
  ..F....... [ZBX-27836] added many checks for existing role rules so that manual form_refresh parameter in URL does not change update form to defaults
  ..F....... [ZBX-27836] fixed PHP runtime errors in user role edit form