New version of ChartJS

Replaced chart.min.js by minimized (yuicompressor-2.4.8) version of improved version of this chart (from https://github.com/FVANCOP/ChartNew.js)
Since (https://github.com/nnnick/Chart.js/) no longer support. And last update was 7 months ago.
The new version has a lot of graphical improvements and bugfixes, also has backward compatibility with your version and support negative values very well.