Handle numero sign in sortkey

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@9986 5227b50d-9349-4574-b055-4b0a7525e11c
Handle hyphen-minus in sortkey

git-svn-id: svn://svn.code.sf.net/p/autowikibrowser/code/AWB@9987 5227b50d-9349-4574-b055-4b0a7525e11c