Bug 3969: Fix funds search

Bug 3969: Fix funds search

The funds search does not work at all.
On the budget and the budget plan page, the library dropdown list is
empty.

Test plan:
On the budget, the budget plan and the fund pages, confirm that you are
able to search a fund by code (or name) and the library dropdown list is
correctly filled.

Tested with several combinations. Works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Tested various combinations, no problems found.
Passes tests and QA script.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>