[Epic] Seed new instances w/ an example dashboard

[npretto]

Links

• product doc: Seed new instances w/ an example dashboard
• eng doc:
• feature branch:

Slack thread with some context

Implementation Plan

Tasks

Beta Give feedback

1. Sample content #40753
   .Team/BackendComponents no-backport +2
   
2. Add a setting with the sample dashboard ID for embedding use
3. Add curate permissions for "All Users" for example collection #41512
   .Team/BackendComponents no-backport +2
   
4. Exclude sample content and Metabase Analytics from usage stats #41519
   .Team/BackendComponents +1
   

The dashboard's ID will be 1.

[npretto]

Hey @crisptrutski, for the second part Expose example dashboard to the frontend we were thinking about putting the id of the dashboard on a nullable admin-only setting, it should be the simplest solution for both the BE and the FE, let me know what you think.

[crisptrutski]

@npretto yes I saw that in the product doc, and it makes sense to me. it could also help with filtering out the corresponding audit events.

FYI @calherries has picked up the task from me