[WIP][FEATURE] integration of sidebar for account and contacts

__Tasks:__

- [ ] test coverage
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | yes
| Fixed tickets | none
| Doc           | none
This *looks* like you are using an address object to retrieve the same address object ... I guess the method could be named better.