Bug 17817: (Follow up) Fix reordering subfields issues

Bug 17817: (Follow up) Fix reordering subfields issues

Authority controlled subfields have invisible divs which produced
a strange behavior when reordering (multiple clicks were needed
to push a subfield up over an authority controlled subfield)

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit c7a02725808ba029a28a178ff2ffe9045a9842b0)
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>