[FEATURE] new handling for bank details

- handling of band details
- new fiels for bank details

__Tasks:__

- [ ] gather feedback for my changes
- [x] adjusted ui
- [x] add js functionallity

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| Tests pass?   | none
| Fixed tickets | none
| Doc           | none

__Fixed Issues__:
- https://github.com/massiveart/POOL-ALPIN/issues/32

__New Issues:__
- https://github.com/sulu-cmf/SuluContactBundle/issues/102

__Merge following before:__

- https://github.com/sulu-cmf/sulu-standard/pull/89
- https://github.com/sulu-cmf/SuluAdminBundle/pull/122
@michaelzangerle $this->getRequest() is deprecated!
please use:
```public function postAction(Request $request)```
to inject the request object