Bug 18906: Display all funds the logged in user can use

Bug 18906: Display all funds the logged in user can use

There are complex conditions to know if a librarian can use a fund, we
cannot do that with a SQL query, we need to use C4::Budgets::CanUserUseBudget

When this patch is applied then all funds are visible to both
superlibrarian patrons and patrons with all acq permissions

Signed-off-by: Alex Buckley <alexbuckley@catalyst.net.nz>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>