Date = function (options) {
        this.init('date', options, Date.defaults);
        this.initPicker(options, Date.defaults);
    }
Bootstrap-datepicker.  
Description and examples: https://github.com/eternicode/bootstrap-datepicker.  
For **i18n** you should include js file from here: https://github.com/eternicode/bootstrap-datepicker/tree/master/js/locales
and set `language` option.  
Since 1.4.0 date has different appearance in **popup** and **inline** modes. 

@class date
@extends abstractinput
@final
@example
<a href="#" id="dob" data-type="date" data-pk="1" data-url="/post" data-title="Select date">15/05/1984</a>
<script>
$(function(){
    $('#dob').editable({
        format: 'yyyy-mm-dd',    
        viewformat: 'dd/mm/yyyy',    
        datepicker: {
                weekStart: 1
           }
        }
    });
});
</script>