Practice a complete workflow with Anne, Tilman, and Kalash

[maurolepore]

The whole game:

• [ ] Anne and Tilman create a PR from GitHub.
• [ ] Kalash tests the app locally and merges the PR (Why and how - 5' video).
• [ ] Anne and Tilman validate the changes on staging.
• [ ] Kalash creates a new release.
• [ ] Everyone confirms the change is now in production.

[maurolepore]

I have learnt how to create a new release using updates from the staging app with the help of @mauro -- @kalashsinghal via Slack