campaignion 7.x-1.0-beta19

Summary

This release introduces two new features:

1. Newsletter checkboxes now have an additional configuration option that lets you set whether a double-opt-in should be carried out by the newsletter provider (if the subscription is new).
2. It's now possible to configure notification emails for donations.

Full list of changes since 7.x-1.0-beta18

• [newsletters] Make it possible to do a double-opt-in via the provider. [view commit]
• [newsletters] Tell the provider whether to send a welcome email. [view commit]
• [recent-supporters] Don't filter for activity type. [view commit]
• Make notification emails available for donations. [view commit]
• Remove dead code in NotificationEmail. [view commit]
• [manage] Add missing dependency on campaignion_activity. [view commit]