Chartjs-Charts js – How to make gridlines dash and How to make the gridlines stop at each point

There is a pull request accepted to the core on Aug 11, 2016, which should be released soon.
( https://github.com/karthikiyengar/Chart.js/commit/db457fe2294a03ac864f6dd219713398bbaf9d63 )

This will utilize the borderDash param that is passed to gridLines itself.