Convert the "Tip of the Day" dialog from Scheme/C/Glade to C/Glade.

[David Hampton]

Log Message:
-----------
Convert the "Tip of the Day" dialog from Scheme/C/Glade to C/Glade.
The installed tip file can still be updated by users, but is now
essentially a free-form file where tips are separated by two
consecutive newline characters.  The tip file in the sources still
contains gettext markup.

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash:
        ChangeLog
        make-gnucash-potfiles.in
    gnucash/doc:
        .cvsignore
        Makefile.am
    gnucash/src/gnome:
        Makefile.am
        gnc-main-window.c
        gw-gnc-spec.scm
    gnucash/src/gnome/glade:
        totd.glade
    gnucash/src/gnome/schemas:
        Makefile.am
    gnucash/src/gnome-utils:
        gnc-gnome-utils.c
        gnc-gnome-utils.h
    gnucash/src/scm:
        Makefile.am
        main.scm

Added Files:
-----------
    gnucash/doc:
        tip_of_the_day.list.in
    gnucash/src/gnome:
        dialog-totd.c
        dialog-totd.h
    gnucash/src/gnome/schemas:
        apps_gnucash_dialog_totd.schemas

Removed Files:
-------------
    gnucash/src/gnome:
        gnc-totd-dialog.c
        gnc-totd-dialog.h
        tip-of-the-day.c
        tip-of-the-day.h
    gnucash/src/scm:
        tip-list.scm
        tip-of-the-day.scm