[devhelp] (22 commits) ...Merge branch 'gb619202-book-manager'

[Frederic Peters <fpeters src gnome org>]

Summary of changes:

  7969702... New book manager object
  fa41f56... made add_from methods private
  335e031... Refactoring to use the book manager
  24a2ab6... Ignore files ending with tilde
  586feb5... minor fixes
  7d4debe... Added new book manager dialog
  19191b7... book manager dialog: populate tree
  f6b1d5e... configuration: new list of disabled books
  3657fde... book manager: new signal to emit when list of disabled book
  5eada96... Re-populate search combo if book manager updated
  f85fc5c... contents tree: update if list of disabled books changes
  bd57a32... Authors: updated
  826284a... preferences dialog: add bookshelf tab
  8caa65c... book manager dialog removal, as it's now in the preferences
  ac48086... Remove unneeded menu item
  2906088... preferences dialog: small refactor
  572969e... Make sure all books are properly ordered by title
  254c9a4... Instantly apply changes in the book list
  dd59e21... preferences dialog: better alignment of widgets
  db98307... minor fixes in copyright notices
  b3068da... Align center checkboxes in bookshelf
  a9b25d7... Merge branch 'gb619202-book-manager'