Make example app GDPR-safe

[ottlinger]

Rules of GDPR/DSGVO
https://www.kontaktformular.com/kontaktformular-mit-dsgvo-eu-datenschutz-grundverordnung-fuer-ihre-website.html

• need to explicitly mark mandatory fields
• user needs to accept the data protection rules
  • provide a link to it in the form
• and in the menu
• make this link configurable
• add a dummy page with a link to the DSGVO-generator
• make link to GDPR-page configurable within the application

Confirmation text

When checking the middle checkbox you accept to have read and understood our accept our GDPR documents.