* renamed Javascript to 'JS' in nabvar of document.
 * updated html reset style.
 * ajusted style of document.
 * added helper function to get client lang.
 * added some useful function to date.
 * updated src/template.js.
 + added calendar view.
 * added event interface to calendar.
 * updated datetimepicker: get lang setting form html tag.
 * ajusted font family of kindeditor.
 * updated calendar: clean up example data and fixed some errors.
 * rebuilt js.
 * updated document.