Item12491: don't disclose topics a user doesn't have view rights on


git-svn-id: http://svn.foswiki.org/branches/Release01x01/core@16707 0b4bb1d4-4e5a-0410-9cc4-b2b747904278
Item12491: it is called item here, not topic



git-svn-id: http://svn.foswiki.org/branches/Release01x01/core@16708 0b4bb1d4-4e5a-0410-9cc4-b2b747904278