fix for 0003774: Only administrator can manage custom fields, because link is missing
fixed permission filtering for menus

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@3023 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9