sulu-cmf/sulu-standard#125 Copy locale ui

__Tasks:__

- [x] test coverage
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | yes
| Fixed tickets | sulu-cmf/sulu-standard#125
| BC Breaks     | none
| Doc           | none
Can we use the ContentMapperRequest?

````php
ContentMapperRequest::create()
    ->setData($data['en'])
    ->setTemplateKey('overview')
    ->setWebspaceKey('default')
    ->setLocale('en')
    ->set ????
    ->set ????
    ->setState(StructureInterface::STATE_PUBLISHED);
$cm->saveRequest($request);
````