fix wrong scale start value in HorizontalStackedBar

References issue #139

Incorrect scale start value for HorizontalStackedBar when scaleOverride:
true
Merge pull request #140 from yokuze/horizontalStackedBar139

fix wrong scale start value in HorizontalStackedBar
Update ChartNew.js
Merge pull request #141 from FVANCOP/savePNGV2

Update ChartNew.js
Update improvements_change_history
Update improvements_change_history
gradient color enabled
Create gradientColor.js
Create issue_102.html

Sample for Add-ins\gradientColor.js
Merge pull request #144 from FVANCOP/gradientcolorv2

Gradientcolorv2
Update improvements_change_history
code re-indented
Code re-indented
code re-indented
Code re-indented
Bug in Radar and Line 

Bug when animationLeftToRight: true
Update ChartNew.js
Update ChartNew.js
Merge pull request #148 from FVANCOP/gradientColorBugCorrection

Gradient color bug correction
Removing the previously installed mouse event listener.
Otherwise the evenet handler gets called exponentially if you recreating a chart
(kinda workaround as we do not have an "update" or smth like that).