refactors the way a portal user can edit the data of the structures he
is affiliated with.
All main, public and position profiles data are gathered in one
"structure" form.
Adds several navigation improvement (back to structures list,
validation message, ...)
It was impossible to read or edit structure profiles from the portal.
Solved with:
- the add of a dependency to "partner_contact_in_several_companies"
add-on
- the modification of a security rule to consider the structure public profile
