Fix & deploy the demo from Janina

[kamilzyla]

Janina's demo: Drive.

1. Ensure that demo code lives in a repo (either shiny.blueprint or a separate one). Ask Janine.
2. Fix issues (learn what issues) with the demo.
3. Deploy the demo and link to it from the README.

[averissimo]

Info

Repo location: Appsilon/experimental.blueprint.demo

Demo description by @jan-smo

Technical bottleneck:

• UI uses columns instead of tabs to present data due to a (now close) issue with shiny.react #21 (Support nested reactOutput)

Screenshots (see more in the demo description google doc linked above)