Bug 31459: (follow-up) Preserve budget period display

Bug 31459: (follow-up) Preserve budget period display

This patch adds a level to the budget_loops and displays the budgets
as optgroups for the funds

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
https://bugs.koha-community.org/show_bug.cgi?id=31559
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 2a22c13cf38b45c145fc3ece7d044fefb1dd78e5)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 63a56840208480efbd9615f81efdc8b8e9925904)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>