[TASK] Enhance composer.json

Change-Id: Ia4cd22685324f7a1f61d9fd8b0a54e8928ad5b3c
Reviewed-on: http://review.typo3.org/35346
Reviewed-by: Xavier Perseguers <xavier@typo3.org>
Tested-by: Xavier Perseguers <xavier@typo3.org>