Added [private] next to the bug summary to indicate that it is a private one.
Similar to [announcement] [private] in news. We may consider using an image
for a small lock in the future to indicate private entities.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@1117 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9