Changelog:
[IMP] Odoo: allow empty structure nodes
[IMP] Odoo: expand parsing range of OdooStructureNode
[FIX] DomHelpers: removeNodes only when they exist
[FIX] withDomMutations : getParentModifiers
[FIX] withDomMutations: don't get node loosely
[FIX] withDomMutations: remove the proper observer
[FIX] OdooField: do not apply empty class if placeholder
[FIX] OdooWebsiteEditor: add expected Theme plugin
X-original-commit: 537c3318a6f2751d83a011345602456125420590