Add utility to get first day of the week
@pborelli
Submitted by Paolo Borelli Link to original bug (#693716)
Description
See http://git.gnome.org/browse/gnome-shell/tree/src/shell-util.c#n244
As you can see it is used in the shell and copied from gtkcalendar. I need it in clocks and I am pretty sure Evo has something like that too