Evolved POSITIONING valuelabels and added right drawing for series bars horizontal. ONLY for showAsHtml!

The default positioning of valuelabes did not fit my quality standars and I've modified a little.
Now the valuelabes for bars are drawed inside the bar, if there is room.
The valuelabels are centered respect to the value point.
The valuelabels don't overlap with previous label and don't go out of PlotOffset.
My code is not nice, but it works ;)