PURPOSE
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Currently we can choose to load the xmlid of a menuitem if web_tour is installed by setting the attribute `load_xmlid=True` on the view.
This is strange for 2 reasons:
- Searching all the ir.model.data on menuitems with load_xmlid=True to compute its xmlid, searching the related subtree on the returned structure of the method load_menus is quite complicated for the perfomance gain (if there is any perfomance gain to do it)
- This is not working in community in frontend, as only the root menuitems are loaded, thus it is the `load_menus_root` instead of the `load_menus` that is called. This issue prevent a tour step to be displayed correctly on community and enterprise on a menuitem.
SPECIFICATION
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Remove all the `load_xmlid` attributes and the related mechanism and move it into base to always load the xmlids for all the menuitems. It won't bee to heavy as the result is cached.
It's better the keep the current mechanism (Load the xmlids from ir.model.data and insert them into the tree) as we only make 1 search to the ir.model.data
Yannick Tivisse