[fix] save unknown preferences parameters to cookies
[fix] save unknown preferences parameters to cookies

Without this courgette color selector can not work

PwnArt1st/searx,pointhi/searx,pointhi/searx,pointhi/searx,dalf/searx,jcherqui/searx,dalf/searx,PwnArt1st/searx,jibe-b/searx,asciimoo/searx,potato/searx,potato/searx,misnyo/searx,asciimoo/searx,asciimoo/searx,misnyo/searx,asciimoo/searx,PwnArt1st/searx,pointhi/searx,dalf/searx,matejc/searx,potato/searx,matejc/searx,matejc/searx,jcherqui/searx,jcherqui/searx,dalf/searx,jcherqui/searx,matejc/searx,misnyo/searx,misnyo/searx,jibe-b/searx,jibe-b/searx,jibe-b/searx,potato/searx,PwnArt1st/searx