Addresses 2918000, 2924545, and other misc

charts.module

includes/charts.pages.inc

modules/charts_api_example/charts_api_example.module

modules/charts_c3/src/Charts/C3ChartsRender.php

modules/charts_google/src/Charts/GoogleChartsRender.php

...s/charts_highcharts/src/Charts/HighchartsChartsRender.php

modules/charts_highcharts/src/Settings/Highcharts/Chart.php

src/Form/ChartsConfigForm.php

src/Plugin/views/style/ChartsPluginStyleChart.php