Bug 35600: Prevent checkouts table to flicker

Bug 35600: Prevent checkouts table to flicker

The checkouts table is displayed in the DOM then hidden in JS, then we show it if the cookie is set.

This patch makes the table hidden by default, and show it if/when needed

Test plan:
Check an item out, see the checkouts list view
Play with "Always show checkouts automatically", refresh the page
=> UI should behave better than before this patch

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit 6c8beb2f2ed566dc2e6645d99f2ef0e80eaf726b)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>