Solved a problem with the gap between the Actual Progress line and the Projected lines

If we look at the 5day Burndown on a weekend, then the removal of
Saturday and Sunday will result in that there will be a gap in the
diagram bewteem the Actual Progress and the two Progress lines to
overcome this little problem, we simply prepend the last array-element
of the Actual Progress to the beginning of the two Projected lines.