Adding on_draw_events callback

[sanchezfauste]

Adding on_draw_events callback. This function is called when calendar is redrawed.

$(".fiscal-calendar-div").zabuto_calendar({
    language: "es", 
    today: true,
    ajax: {
        url: "/get_events",
        modal: false
    },
    on_draw_events: function(events) {
        console.log(events)
    }
});