MP-494: Add search backend settings.
MP-494: Add search backend settings.

MidAtlanticPortal/marco-portal2,Ecotrust/marineplanner-core,Ecotrust/marineplanner-core,MidAtlanticPortal/marco-portal2,MidAtlanticPortal/marco-portal2,Ecotrust/marineplanner-core,Ecotrust/marineplanner-core,MidAtlanticPortal/marco-portal2,Ecotrust/marineplanner-core