Update Mantis to link to mantisbt.org

The official Mantis Bug Tracker website was changed temporarily to mantisbugtracker.com, this page will guide you through the process of linking back to mantisbt.org if you happened to have a Mantis release which links to mantisbugtracker.com (these are 1.0.6 and 1.1.0a1). It will be greatly appreciated if you can update your Mantis installation and your website to point to mantisbt.org. You can do that as follows:

Please apply the same changes to any other links that you may have to Mantis website.