Quantify Dashboard Usage

## What?

What I’m looking for is an easy way to see how much usage each of the dashboards that we’ve created are getting.

For example Dashboard A is used 10 times a day by 7 different people, while Dashboard X has not been used in the last month.

Within the dashboard it would be really helpful if we could see which Tab on the dashboard is used most often as well like this

## Why?

This would help us better determine which dashboards are providing real value and which either need to be redesigned or eliminated.

Being able to see which of those tabs is referenced most often would help in breaking down the dashboards to a smaller unit for analysis of what is useful.

## Your Environment

* Graylog Version:
* Elasticsearch Version:
* MongoDB Version:
* Operating System:
* Browser version: