[WIP][FEATURE] added configuration and translations for additional contact fields

__Tasks:__
- [ ] add configuration for additional fields in contact
- [ ] add translations for additional fields in contact
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| Tests pass?   | none
| Fixed tickets | none
| Doc           | none