[RELEASE] Release of TYPO3 4.7.11rc1

Change-Id: I8645f4617038d81da7d5712b3372482f2e9a5fb0
Reviewed-on: https://review.typo3.org/20089
Reviewed-by: TYPO3 Release Team
Tested-by: TYPO3 Release Team
[TASK] Set TYPO3 version to 4.7-dev

Change-Id: Idfdf2ada397271161c483be0236e6002c7f9b953
Reviewed-on: https://review.typo3.org/20090
Reviewed-by: TYPO3 Release Team
Tested-by: TYPO3 Release Team