[devhelp] (4 commits) Non-fast-forward update to branch wip/stuff

[Ignacio Casal Quinteiro <icq src gnome org>]

The branch 'wip/stuff' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 http://live.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  2cf9cb9... book tree: make book manager a construct only property
  94b9847... book tree: dispose instead of finalize
  304ae4a... book tree: use constructed to setup the book manager

Commits added to the branch:

  1df8947... preferences: Fix it so the notebook expands properly (*)
  9871d50... book tree: make book manager a construct only property
  4c9ef60... book tree: dispose instead of finalize
  d90e1df... book tree: use constructed to setup the book manager

(*) This commit already existed in another branch; no separate mail sent