* website, website_blog, website_form, website_sale + introduce default UI for snippet options + refactor style of icon buttons Part of https://github.com/odoo/odoo/pull/38959 task-2066614
* website, website_blog, website_form, website_sale + introduce default UI for snippet options + refactor style of icon buttons Part of https://github.com/odoo/odoo/pull/38959 task-2066614