Hello,
  I wish to change the Graphite theme to remove the site name and tagline from the top and replace with a graphic.
  Therefore, I created a new theme, as a copy of Graphite.  I then changed the dndindex.html and general.html files, as shown in the documentation.  The change is now showing in the "Main" tab (i.e. /index) but all the other tabs show the old site name and tagline (/users, /blog, etc.)
  Where am I going wrong?

Thanks in advance!
PH