when we get the whitespace display toggle, update the titlebar as well
as the edit window, in case the filename displayed on the titlebar
contains spaces or tabs; also add a few miscellaneous cosmetic fixes


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2160 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
3 files changed