[FIX] view_form: use the reference of menu from the instance, not from the widget ancestors
Fixes #1024: when using a formview on a non trivial way, the reference of the menu using the widget ancestors may be wrong
Merge pull request #1097 from odoo-dev/8.0-fix-view-editor-sle

[FIX] view_form: use the reference of menu from the instance, not from t...