[TASK] Use bootstrap colorpicker consistent over the whole backend

This patch inserts the same colorpicker on all places where a colorpicker
is used in the TYPO3 backend.

So it tackles:

 - formengine
 - constant editor
 - extension manager

Releases: master
Resolves: #73728
Change-Id: I0efd9f1e90dce3a66a80bb9969c03b87fb2f851d
Reviewed-on: https://review.typo3.org/47570


Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>