Dashboard - Little improvements

Hi guys,

I have some little requests on the dashboard UX:

1. I’d like to have the possibility of archiving old dashboards instead of deleting them. This is especially needed now that the sidebar is getting crowded.
2. Grouping dashboard in folders would be lovely. 
3. Adding a text block between reports in dashboard to explain findings and better contextualize analysis

Thanks for your attention,

Giacomo