Show whole Dashboards instead of single visualizations

[lukas-rotsching]

User story

1. As a user
2. I want to see complete dashboards that i created in OS-Dashboards instead of single visualizations
3. So that i can easily rearrange, resize etc. them.

Acceptance criteria

• Discover available dashboards instead of single visualizations
• If there are multiple dashboards, give me a way to select which one i want to see (e.g. via a drop down menu)
• Automatically show a dashboard if there is one available. I don't want to first click it in the drop down menu. Just show it. If there are multiple dashboards, just show a random one or sort them alphabetically and show the first one or something similar...

Definition of done (DoD)

A feature is considered complete when

• All of its acceptance criteria have been met.
• It has been thoroughly tested.
• The code has been peer reviewed by the dedicated team.
• It can be seamlessly integrated into the main branch without causing any negative side effects.
• Its core functionality has been thoroughly documented.

DoD general criteria

• Feature has been fully implemented
• Feature has been merged into the mainline
• All acceptance criteria were met
• Product owner approved features
• All tests are passing
• Developers agreed to release