Implemented SecurityListener

Enables the possibility to simply add an interface to a controller, add the `getSecurityContext`-method, and let then Sulu automatically check the permission.

__Tasks:__

- [ ] test coverage
- [ ] gather feedback for my changes
- [ ] submit changes to the documentation
- [ ] add localization to check

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | yes
| Fixed tickets | none
| BC Breaks     | none
| Doc           | none