LP1183467 ACQ view funding source list permissions

Limit the set of funding sources visible in the funding source list
interface by those the user has view permissions for, not just those the
user has edit permissions for.

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Remington Steed <rjs7@calvin.edu>
Signed-off-by: Mike Rylander <mrylander@gmail.com>