title: Add tag to document from Kibana
body: <p>We use Kibana, ElasticSearch and Logstash to monitor the health of production systems.</p>
  
  <p>When fatal errors are logged, then handled by our support staff, <strong>we would like to be able to tag them as "Handled/Fixed" as well as insert a comment, within our Kibana dashboard.</strong> </p>
  
  <p>This way we could set up a dashboard that displays only "Unhandled" errors that haven't been looked at by the support staff. A very basic ticket system, if you will, based on production logs.</p>
  
  <p>Is there any plugin for Kibana that provides this feature?</p>
  
  <p>If not, could a gentle soul provide a high-level overview of the development that would be required to write such a plugin?</p>