[RELEASE] Release of TYPO3 6.2.7

Change-Id: Idf04e317186c1775cc1b453dcaad2614c5f50ee9
Reviewed-on: http://review.typo3.org/34683
Reviewed-by: TYPO3 Release Team <typo3v4@typo3.org>
Tested-by: TYPO3 Release Team <typo3v4@typo3.org>