Zabbix

..F....... [ZBX-26979] fixed issue causing empty error message when adding a new template group to a template

* commit 'c1479c51c1c50a341a9db53f79c74924ccbd0223':
  ..F....... [ZBX-26979] fixed potential issue when DB commit fails
  ..F....... [ZBX-26979] added check to prevent updating a deleted template
  ..F....... [ZBX-26979] fixed coding style issues, updated changelog file
  ..F....... [ZBX-26979] updated inline validation rules for the groups_new host property
  ..F....... [ZBX-26979] added the 'use' rule for inline validation on array fields
  ..F....... [ZBX-26979] added try-catch to correct handle exceptions in doAction method execution

(cherry picked from commit 4ebd1f044ddd7d6437ee0f2ed0eded185871e88a)