[TASK] Upgrade jQuery to 1.11.0

Besides fixes this release features
"fewer forced layouts" and "lower startup overhead".

Change-Id: I988141ccd356425626f68089f9e65c1b04174c23
Releases: 6.2
Resolves: #55367
Reviewed-on: https://review.typo3.org/27076
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Benjamin Mack
Tested-by: Benjamin Mack