Add Automation UI
Created by: felixfbecker
Adds the UI for the automation 3.8 milestone.
New pages:
- Global campaigns list
- Global campaign details list
- Shows progress bar with status (no historical burndown chart yet)
- Lists changesets (no add functionality yet, need to use API)
- No delete, edit yet
- Global new campaign form (with dropdown for namespace)
I am using React hooks for all components, and a new hook for Observables.