Add push notification

1.2.0

Fixed:

• Missing payment information for secured invoice and direct debit on success page and notification mail.
• Invoice instruction was shown in other mails where other payment methods were used.
• Exception that can occur in combination with other plugins.

Added

Features:

• Support for push notifications
• A checkbox to decide whether payment information should be added to the notification mail or not.

Changed

• Secured invoice will be set to processing after successful checkout