Add ModifiedDate to Saved Viz/Dashboards/Search

[ubhackn]

After using Kibana for a while, we now have a large set of saved objects (Dashboards, Visualizations, Searches). When we want to clean them up, it would be nice to know if they are still relevant. We would be able to make some assumptions about whether we can delete some of these based on when they were last modified.

Can you add a column for Modified Date to the Open dialog for Visualizations, Searches and Dashboards, along with the Edit Saved Objects pane? And then let us sort by it, so we can remove older objects.

[snide]

I'm removing the design label on this one. Looks like there is space here for this and it makes sense. Design wize I'd simply add a column to the current table if we have the data available.

[alexfrancoeur]

We'd definitely want to support this in the plugin views as well, not just the saved object management screen. I'm not sure if we're storing that meta data at the moment but we hear requests for this all the time.

[timroes]

Blocked by #9202

[elasticmachine]

Pinging @elastic/kibana-app

[stratoula]

The visualizations team doesn't own this team but still the SOs management page has more columns now so I feel that this request has been addressed