resource locator component

resource locator component:

__Tasks:__

- [ ] test coverage
- [ ] gather feedback for my changes
- [ ] submit changes to the documentation
- [ ] implement resource locator component
- [ ] extend resource locator api with history
- [ ] generate list of history entries in Sulu-Lib

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| Tests pass?   | yes
| Fixed tickets | none
| Doc           | none