fixed multiple components bug

fixed bug with multiple events - in the end multiple components were the reason for multiple events 

- [x] finish the code
- [ ] gather feedback for my changes
- [ ] submit changes to the documentation


| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Tests pass?   | none
| Fixed tickets | yes
| Doc           | none

Issues that can be closed after merge
- https://github.com/sulu-cmf/SuluAdminBundle/issues/67