When downloading Word/Excel exports, spaces in the title caused the entire filename to be abandoned. In addition, 'special' characters in the title would cause part of the title to be cut off.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@1197 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9