Odoo Server 15.0 - en to nl translation catalogue (3 entries)

note: module: mass_mailing_slides
en: Contact Attendees
nl: Neem contact op met deelnemers

note: module: mass_mailing_slides
en: Course
nl: Cursus

note: module: mass_mailing_slides
en: Mass Mail Course Members
nl: Bulk mailing cursus leden
