The method `getValue` of the wysiwyg could have some cleaning on the
value that will always make it different from the original value.
The _isDirty method of the html field will now make the original value
be processed by the wysiwyg `getValue` to be able to compare it
with the current value.
The sanizite call in `OdooEditor.cleanForSave` had the wrong root. As
we are calling `cleanForSave` for an element that is not inside the
editable, the root cannot be `this.editable`.
task-3679122
closesodoo/odoo#148996
Signed-off-by: Antoine Guenet (age) <age@odoo.com>
Nicolas Bayet
119fa9f974