Convert scheduled transactions over to the new preferences dialog and

[David Hampton]

Log Message:
-----------
Convert scheduled transactions over to the new preferences dialog and
gconf storage.  Fix register menu problems when in embedded windows.
Use C side hooks to set up the "since last run" dialog.

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash:
        ChangeLog
    gnucash/src/app-utils:
        prefs.scm
    gnucash/src/gnome:
        dialog-scheduledxaction.c
        dialog-scheduledxaction.h
        dialog-sx-from-trans.c
        dialog-sxsincelast.c
        dialog-sxsincelast.h
        gw-gnc-spec.scm
        top-level.c
    gnucash/src/gnome/glade:
        sched-xact.glade
    gnucash/src/gnome/ui:
        gnc-plugin-page-sxregister-ui.xml
        gnc-sxed-window-ui.xml
    gnucash/src/scm:
        main.scm

Added Files:
-----------
    gnucash/src/gnome/schemas:
        apps_gnucash_dialog_scheduled_transctions.schemas