Bug 23019: (follow-up) Fix usability issues

Bug 23019: (follow-up) Fix usability issues

This patch place profile buttons in the bottom of the page, next to "Stage for import"

It removes the "Update profile" button, and changes "Add profile" to "Save profile". Save profile can be used to add and to update a profile.

It also adds feedback when a profile was saved or deleted.

Last, it also replaces input-batch-profile endpoint name for input_batch_profile, which is more aligned with other endpoint names.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>