- fixed a small SQL bug in page.module
- slightly improved story.module, node.module and book.module
- made the "default theme" a setting from the setting page
- polished a bit on the export function: we can now export the
  book or parts thereof through the following url:

    1.  http://drop.org/export/book/
          (full book)
    2.  http://drop.org/export/book/nid
          (where nid is the node id to start with)

  The export routine demonstrates how it can be done yet the
  output is too basic and can only improve over time.