 - cache
   cache mime types
   cace over rides
   disk cache

 - names
   config panel

 - add configuration stuff:
    filters, paths, etc
    toolbar preferences
    history/cache sizes/filesnames

 - session management

 - fix error handling (back, etc)

 - work on DocBook output to generate topic.dat automatically (need to use
   special tags in DocBook to denote links which should go into the 'Help' 
   menu).
 - Need to have help browser<->application communication for better
   integration into GNOME apps in the future

 - fix broken toc
    use real path for ghelp
    geometry and ui cleanups

 - fix history
    geometry - figure out how to set column widths and let first one expand

 - can back/forward buttons have dropdown history?

 - fix image loading callback to fit in to the scheme of things

 - make man2html & info (and other filters) loadable modules
