prevent cancelling makeup from borne d'accueil in connected mode as point decrementation does not work and therefore leads to bugs

fix bug preventing salarie from validating new member created as suppleant (+ fix default country ID)

really pass shift_type with proper format to create_coop_shift_subscription (where is bug actually is)

hide warning "deletion of this shift is a makeup this action will add a point" if line is not a makeup

in js update members makeup method, fix a bug by not updating makeups_to_do global js variable unless request is successful

mostly #7524 and #7413 so that "cancellations" of shift and shift_templates work fine especially when adding/changing shift

take into account the possibility of several shift_template_registration for one res_partner, but only one active

code cleaning : get rid of quick-and-dirty circular dependency fix by moving some code in separated file