[FEATURE] additional fields for contact (form of address, salutation, disabled)

__Tasks:__

- [x] adjust api
- [x] test coverage
- [x] extend configuration for keys <-> translation key and make it available to the via api
- [x] integrate fields in form
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| Tests pass?   | yes
| Fixed tickets | [none]
| Doc           | none

Merge following PRs before this one:
- https://github.com/massiveart/husky/pull/309
- https://github.com/sulu-cmf/sulu-standard/pull/83

Issues:
- https://github.com/sulu-cmf/SuluContactBundle/issues/90