defines formatting templates for dates, titles, tooltips in the Gantt chart
//specifies the format of the date in the 'Start Time' column of the table
gantt.templates.date_grid = function(date){
return gantt.date.str_to_date(gantt.config.date_grid);
};
The properties of the templates object are described in a separate chapter of
the root API page "Gantt API: Templates".