Allow to open Many2One in new tab
A little bit similar to #6848 (closed).
On tryton, we have the popup menu (on right-click) on the field which provides access to edit, action, relate and report.
Such menu does not really exist in HTML5 (except for the deprecated https://caniuse.com/#feat=menu).
I propose to allow to open the Many2One on a new tab instead of the popup by using the CTRL modifier key (this kind of mimic browsers behavior of opening link to new tab).
This will give the user access to the actions, relate and reports.
I do not think it should be implemented in tryton as there is already the popup menu and it is not a paradigm from desktop application.