Bug 16736 - Keep branch filter when changing suggestion

Bug 16736 - Keep branch filter when changing suggestion

When changing suggestion, the selected tab is kept.
The same should be done with the selected branch.

Test plan:
- Go to suggestions table : /cgi-bin/koha/suggestion/suggestion.pl
- Select a branch in Acquisition information > For
- Select a pending suggestion
- Change status as accepted
- Click on Submit
=> without patch, the table is no longer filtered by branch
=> with patch, the table is filtered by branch

Works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>