Bug 13619: Acq home: ensure 'manage suggestions' goes to pending suggestions

Bug 13619: Acq home: ensure 'manage suggestions' goes to pending suggestions

The link on the start page of Koha goes to the pending suggestions tab
explicitly. The link on the acquisition start page doesn't do that so
when you have your own status it might show another tab first.
Patch links to be the same and explicitly target the pending tab.

To test:
- create a new suggestion
- verify link from the acq start page leads to the pending tab
- verify link from the Koha start page does the same

Signed-off-by: Marjorie <marjorie.barry-vila@ccsr.qc.ca>
Signed-off-by: Jonathan Druart <jonathan.druart@koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>