visibility communicating with the right controller action. DMPRoadmap/roadmap#732

visibility_allowed method for Plan. Adequate error handling for visibility action. DMPRoadmap/roadmap#732

UserMailer for when the visibility is successfully saved. DMPRoadmap/roadmap#732

sharing notification completed. DMPRoadmap/roadmap#731

permissions change notification done. DMPRoadmap/roadmap#731

api_token_granted_notification done. DMPRoadmap/roadmap#731

change password done. shared plan for non-registered user. DMPRoadmap/roadmap#731

new entries at branding for mailing. DMPRoadmap/roadmap#731