tinymce/tinymce — pull request #277 by fornwall (2013-11-26 22:32:44+00:00)
Title: Make the initial link target configurable in the link plugin.

When users edit content that will end up in an iframe, it makes sense to configure another target than the default (inside the iframe), especially if the site is https, since http links won't be opened due to Mixed Content Blocking in modern browsers.