fix warning dialog for file alteration by other app to come up again
fix warning dialog for file alteration by other app to come up again

svn path=/trunk/kdelibs/kate/; revision=339252

hlamer/kate,hlamer/kate,sandsmark/kate,hlamer/kate,cmacq2/kate,DickJ/kate,sandsmark/kate,DickJ/kate,DickJ/kate,jfmcarreira/kate,hlamer/kate,hlamer/kate,cmacq2/kate,jfmcarreira/kate,jfmcarreira/kate,DickJ/kate,hlamer/kate,hlamer/kate,sandsmark/kate,hlamer/kate,sandsmark/kate,cmacq2/kate,hlamer/kate,hlamer/kate