Add initial styles for daterange markup
Don't import ; update less buildfile and css file
Don't import `.input-append .add-on`; update less buildfile and css file
Implement initial daterange picker
Merge latest master changes into range branch

--HG--
rename : build.less => build/build.less
Added "today" button to datepicker footer.
Made presence of "today" button cofigurable.
Capitalized "today" value in l10n files.
Added "today" button to month and year views.
Switch back to day view when selecting current date.
Renamed data-today-btn attribute to data-date-today-btn, fixed behavior.
Added documentation for todayBtn option.
Added 2 new events for: picking a month + picking a year

I've added 2 new events: 'pickMonth' and 'pickYear'. These are
triggered when the user picks a month (in the year view) or year (in
the decade view).

possible use case:

$('#datepicker')
.datepicker({startView:'year'})
.on('pickMonth', function(ev){
	var dateObj = new Date(ev.date.valueOf());
	var m = dateObj.getMonth()+1;
	var y = dateObj.getFullYear();
	window.location = '/calendar/'+y+'/'+m;
});
adding support for data tag for startview
adds the option to disable keyboard navigation in textfield
Fix html global variable
Fixed a typo in the date format specification.
Merge latest master changes to todayBtn branch
Put tfoot after tbody
Add tests for today button functionality