[WIP] [FEATRE] Move and Copy nodes

Move and Copy nodes:

__Tasks:__

- [ ] test coverage
- [ ] gather feedback for my changes
- [ ] submit changes to the documentation
- [ ] content mapper: move
- [ ] content mapper: copy


__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | yes
| Fixed tickets | https://github.com/sulu-cmf/sulu-standard/issues/122 , https://github.com/sulu-cmf/sulu-standard/issues/123
| BC Breaks     | no
| Doc           | TODO