Now the client has to explicitly request the inclusion of startup notes.
Also no longer including startup notes or revision lists with every single
serialized Notebook.
* Made sure the trash is not exposed by the read-only notebook view.
* Modified model.User.check_access() to consider read-write access to a
notebook to be sufficient for access to that notebook's trash.
* Modified controller.Users so new users are created with a notebook that
has a trash.
* Changed controller.Notebooks so deleted notes go to the trash (if any).
* changed controller.Users and controller.Root constructor arguments to support this.
* Updated INSTALL document accordingly.
* Client now will prepend this new http_url variable to the logout link.
Dan Helfman