Bug 35633: Upgrade Chocolat JS library from v1.1.0 to v1.1.2

Bug 35633: Upgrade Chocolat JS library from v1.1.0 to v1.1.2

This patch updates Chocolat JS library assets from v1.1.0 to v1.1.2 in
both the OPAC and staff interface. The new version uses SVG images
encoded as data-uris in CSS, so default images can now be overridden in
our CSS. For that reason the Chocolat-related images files are removed
by this patch.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>