Redmine

Since the images of the non-public projects can't be showed without login, if user use email-client such as outlook, he can't perform a login action in that client. So if the notify email of a non-public project contains images, he will always see a red X in the image's position.

I thought that it would be better to embed the images in the emails, so user can always see the images in the mail-body even the email is from a non-public project.