A.F....... [ZBXNEXT-282] Add columns to web scenario list. Add "headers" and SSL related fields to web scenario form. Add "headers", retrieval mode and follow redirects inputs to web scenario step form. Update httpconf.php to process new fields from web scenario. Update popup_httpstep.php to process new fields in web scenario step. Update views for both web scenarios and web scenario step popups. Implement check sand validation in httptest.create and httptest.update API calls.