Copy language command

__Tasks:__

- [x] test coverage
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | yes
| Fixed tickets | part of https://github.com/sulu-cmf/sulu-standard/issues/125
| BC Breaks     | none
| Doc           | none
Have you considered using sprintf?

````
$this->output->writeln(sprintf(
    '<info>Processing aborted: </info> %s <comment>Resource Locator "%s" already exists',
    $structure->getPath(),
    $structure->getResourceLocator(),
));
````