Bug 13369: table should been highlighted correctly when row are grouped

Bug 13369: table should been highlighted correctly when row are grouped

The css used to highlight the rows comes from staff-global.css
We need a more specific rule to be used.

Test plan:
Go on the fund list view and confirm that the rows are correctly
highlighted.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Mason James <mtj@kohaaloha.com>