Fix #72; extract validators into private methods
Fix #72; extract validators into private methods

antoinefinkelstein/active_interaction,JasOXIII/active_interaction,antoinefinkelstein/active_interaction,orgsync/active_interaction,AaronLasseigne/active_interaction,frbl/active_interaction,orgsync/active_interaction,AaronLasseigne/active_interaction,JasOXIII/active_interaction,frbl/active_interaction