[FIX] website: selection of active background option
[FIX] website: selection of active background option

Port of commit 91d6af1dcd774e16f72375012288f5fab7574a4d from website_less

tvtsoft/odoo8,tvtsoft/odoo8,syci/OCB,ygol/odoo,sysadminmatmoz/OCB,microcom/odoo,hip-odoo/odoo,alhashash/odoo,mkieszek/odoo,sysadminmatmoz/OCB,mkieszek/odoo,Elico-Corp/odoo_OCB,optima-ict/odoo,bplancher/odoo,optima-ict/odoo,syci/OCB,stephen144/odoo,tvtsoft/odoo8,Elico-Corp/odoo_OCB,laslabs/odoo,ygol/odoo,dfang/odoo,optima-ict/odoo,storm-computers/odoo,optima-ict/odoo,storm-computers/odoo,laslabs/odoo,sysadminmatmoz/OCB,syci/OCB,microcom/odoo,storm-computers/odoo,tvtsoft/odoo8,laslabs/odoo,sysadminmatmoz/OCB,stephen144/odoo,laslabs/odoo,dfang/odoo,hip-odoo/odoo,Elico-Corp/odoo_OCB,tvtsoft/odoo8,bplancher/odoo,optima-ict/odoo,bplancher/odoo,ygol/odoo,dfang/odoo,mkieszek/odoo,bplancher/odoo,laslabs/odoo,mkieszek/odoo,stephen144/odoo,Elico-Corp/odoo_OCB,ygol/odoo,hip-odoo/odoo,microcom/odoo,stephen144/odoo,ygol/odoo,optima-ict/odoo,stephen144/odoo,microcom/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,alhashash/odoo,mkieszek/odoo,hip-odoo/odoo,alhashash/odoo,ygol/odoo,alhashash/odoo,syci/OCB,storm-computers/odoo,Elico-Corp/odoo_OCB,dfang/odoo,storm-computers/odoo,hip-odoo/odoo,ygol/odoo,mkieszek/odoo,laslabs/odoo,alhashash/odoo,bplancher/odoo,syci/OCB,microcom/odoo,sysadminmatmoz/OCB,alhashash/odoo,Elico-Corp/odoo_OCB,dfang/odoo,dfang/odoo,stephen144/odoo,sysadminmatmoz/OCB,microcom/odoo,syci/OCB,tvtsoft/odoo8,storm-computers/odoo,bplancher/odoo