* generate individual css files; fixes#1969
* simplified css bundleing
* add new generated dist-css files
* use chart specific css files in the examples
- Added option to bypass default groups. If more groups are specified in the nodes than there are in the groups, loop over supplied groups instead of default.
- Added two new static smooth curves modes: curveCW and curve CCW.
- Added request redraw for certain internal processes to reduce number of draw calls.