Zabbix

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

* commit 'fcd1e14b68f608a43f19f9c91f188af472664632':
  ..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
  ..F....... [ZBX-26979] added try-catch to  correct handle exceptions in doAction method execution