Fix financial sample (#7552)
Fix financial sample (#7552)

* Fix financial sample
* Fix major unit determination by copying code from chartjs-chart-financial
touletan/Chart.js,chartjs/Chart.js,chartjs/Chart.js,chartjs/Chart.js,chartjs/Chart.js,touletan/Chart.js,touletan/Chart.js,touletan/Chart.js,nnnick/Chart.js