[TASK] Use Bootstrap 3.3.x in t3skin

Use twbs Bootstrap 3.3 release for t3skin.
Notes: https://github.com/twbs/bootstrap/releases/tag/v3.3.0

Resolves: #62573
Releases: master
Change-Id: I4138bbf154d091e30155998c4e52c79c41967dc1
Reviewed-on: http://review.typo3.org/33640


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>