Bug 12984: Improvement of the funds list view - acqui home

Bug 12984: Improvement of the funds list view - acqui home

Bug 11578 improved the funds list view in the administration module.
It would be great to have the same improvement on the acquisition
home page.

This improvement groups funds by budget and displays them with a
hierarchy.

Test plan:
0/ Create a budget and fund hierarchy, with active and inactive budgets.
1/ Go on the acquisition home page and verify the values are the same as
before
2/ Verify the funds are correctly listed
3/ Verify the links on top of table work (expand/collapse all, show/hide
inactive budgets).

Signed-off-by: Paola Rossi <paola.rossi@cineca.it>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>