Use aggregator to create dummy data for UI

### Background on the problem the feature will solve/improved user experience
Testing UI requires some data to input. Currently this data lives on the front end, which is not ideal.

### Describe the solution you'd like
Move data (dummy data) to back end in aggregator

### Tasks
Description of the development tasks needed to complete this issue, including tests,

### Acceptance Criteria
Standards we believe this issue must reach to be considered complete and ready for a pull request. E.g precisely all the user should be able to do with this update, performance requirements, security requirements, etc as appropriate.