To support jQuery 3 we update Twitter Bootstrap to 3.3.7.

Resolves: #77247
Releases: master
Change-Id: I717afb8c890ea0bf11e8d399797363c414f751b2
Reviewed-on: https://review.typo3.org/49200


Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Florian Steller <florian-steller@outlook.de>
Tested-by: Florian Steller <florian-steller@outlook.de>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>