Changelog:
[IMP] BundleOdooWebsiteEditor: share withIntangibles object for odoo
[FIX] *: use withIntangibles walker to find intangible ZoneNodes
[REF] Layout: ZoneNode is now intangible
[REF] Core: refactor allowEmpty
[FIX] DomHelpers, DomLayout: ensure mutation on correct vdom match
[IMP] core: move browse the arch methods into a walker object
[IMP] core: add support for not tangible container
[ADD] Small: handle <small>
[ADD] Test: some new space tests
X-original-commit: 19661cf0bb8b5ec1fb832c6a935f816da4730b20