Bug 12988: Update table footer with the visible rows - budgets

Bug 12988: Update table footer with the visible rows - budgets

On the budget list view, the total was not updated.
With this patch, the footer (totals) will be updated on filtering rows.

Test plan:
To test with both CurrencyFormat pref values.
1/ Go on the budget list view
2/ Verify the totals are correct.
3/ Filter the table using the filter input and verify the totals are
updated with the rows shown
4/ Hide/Show inactive budgets and verify the totals are still corrects.

Signed-off-by: Paola Rossi <paola.rossi@cineca.it>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described.

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