vitrine prestataire : display questionnaire as form in readonly mode using third value to review option

implement story 5680 : add link to contact form in home page, add type field in contact form and integrate it in contact form email subject, add dedicated parameter

create btn independant from cotisation registering so that comptoir can register donations from adherent separately

hide infos regarding standard cotisations & make all cotisations valid for all adherents and prestataires