[TASK] Switched D&D back from sortable to draggable and adjusted dropzones

Resolves: #66540
Releases: master
Change-Id: I982bb63a14409fd4510126d3d4b88ee85562967e
Reviewed-on: https://review.typo3.org/47058


Reviewed-by: Marius Wieschollek <marius.typo3@mdns.eu>
Tested-by: Marius Wieschollek <marius.typo3@mdns.eu>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Reviewed-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Tested-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Karthikeyan Palaniswamy <karthikeyan@forethought.de>
Tested-by: Karthikeyan Palaniswamy <karthikeyan@forethought.de>
Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>