feat: more role backend and admin/writer roles additions and adjustments

test/seo_output_sitemap_http_test.go

@@ -164,7 +164,7 @@ func TestSeoOutputSitemap(t *testing.T) {
 
 	t.Run("The route does not disturb the owner-only site routes", func(t *testing.T) {
 		e := newSeoOutEnv(t)
-		expectStatusAndText(t, e.call(t, "admin", http.MethodPatch, "/v1/site/2", `{"site_name": "x"}`), 403, apperr.OwnerRequiredErrorMessage)
+		expectStatusAndText(t, e.call(t, "editor", http.MethodPatch, "/v1/site/2", `{"site_name": "x"}`), 403, apperr.MissingPermissionErrorMessage)
 	})
 
 	t.Run("The browser can read the total header", func(t *testing.T) {