Zabbix

A......... [ZBXNEXT-6470,ZBXNEXT-6887] implemented audit logging of report API object

* commit 'cbb2e113dd451093e2ca52ef86c400f64342f318':
  A......... [ZBXNEXT-6887] fixed minor coding style issues
  A......... [ZBXNEXT-6887] fixed active_since and active_till values in audit log being displayed in different date formats on report update
  A......... [ZBXNEXT-6887] removed unnecessary semicolon
  A......... [ZBXNEXT-6887] fixed minor formatting issued according to our best practices
  A......... [ZBXNEXT-6887] fixed runtime errors in CReport::updateUserGroups() method
  A......... [ZBXNEXT-6887] simplified CReport::updateUsers() and CReport::updateUserGroups() methods
  A......... [ZBXNEXT-6887] removed useless code in the CReport::addAffectedObjects() method
  .D........ [ZBXNEXT-6887] added changelog file
  A......... [ZBXNEXT-6887] implemented audit logging of report API object