Zabbix

.......PS. [DEV-4337] fixed watchdog functionality when database is down

* commit '205c473bf43dc46af046ff9dbc0fb594acaa0df0': (21 commits)
  .......PS. [DEV-4337] fixed style issues
  .......PS. [DEV-4337] fixed watchdog to update cached OAuth data every sync cycle
  .......PS. [DEV-4337] fixed style issue
  .......PS. [DEV-4337] added debug messages for tracking OAuth token expiration timestamp
  .......PS. [DEV-4337] fixed uninitialized audit when updating OAuth for mediatype
  .......PS. [DEV-4337] fixed style issues
  .......PS. [DEV-4337] fixed style issues
  .......PS. [DEV-4337] fixed memory leak
  .......PS. [DEV-4337] fixed memory leak
  .......PS. [DEV-4337] handled database not available error
  .......PS. [DEV-4337] fixed style issues
  .......PS. [DEV-4337] fixed style issues
  .......PS. [DEV-4337] fixed style issues
  .......PS. [DEV-4337] fixed style issues
  .......PS. [DEV-4337] fixed type warning
  .......PS. [DEV-4337] added informative debug messages
  .......PS. [DEV-4337] fixed error in audit entry making
  .......PS. [DEV-4337] fixed includes
  .......PS. [DEV-4337] removed database access from alert worker
  .......PS. [DEV-4337] fixed unused markers
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