Scenario Management Visual Elements are unintuitive

[AlexandreSajus]

This feedback comes from a one-hour beta testing session of scenario management using this tutorial as reference: https://docs.taipy.io/en/develop/knowledge_base/tutorials/scenario_management_overview/

This issue is a discussion, it probably duplicates other issues and should be split into the features we want to implement. This issue is important for the positioning of Scenario Management: if we want to advertise Scenario Management visual elements as products for end-users they should be very user-friendly.

The Beta Tester found the Scenario Management Visual Elements not user-friendly for multiple reasons:

1. The "execute scenario" button is too small and unclear:

2. There is no notification of progress when you execute a scenario. If your scenario lasts 2 hours, you have no clear indication of which task is being executed. The beta tester suggested highlighting the task that is being run in the displayed dag: Something similar to this:

3. The output data is not easily accessible, being the third tab of the data node viewer:

4. When the scenario tutorial was done, the user created a new scenario here and inputted a date: He was then frustrated to find this error Why can he not submit his scenario? The notification should be more clear.

[FabienLelaquais]

@AlexandreSajus I encourage you to reach @AAstridVH and organize some short meeting where we could decide how to approach this. There are many topics in there, to be addressed with different means. Does it make sense?

[AlexandreSajus]

Sure, I'll ask her and schedule a meeting

[AlexandreSajus]

Closing this issue to separate it into 3 separate issues: #744 #745 #746