More Roadmap related work

• Don't include versions with released flag set.
• Strike through bugs that are resolved.
• Include the status in the issue formatting.
• Show the number of issues resolved, planned and the progress as a percentage.
• Don't show project names if they include no non-released versions.
• Sort issues so that the resolved issues appear at the bottom.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@4234 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9