Introducing Double Opt-In

[mahype]

Issue Overview

For data privacy reasons, a double opt-in option will be introduced.

Todos

• [x] Hook for interrupting completion of form.
• [x] Double opt-in tab with enable and email field selection.
• [x] Email template for opt-in mail in global settings section.
• [x] Adding JS for template tags
• [ ] Testing functionality

[Krasskieke]

Hi mahype, when is this Function ready to use, it would really help solving my solution.

Regards

Christian