How to Upgrade JQuery UI========================To upgrade JQuery UI, use [JUI Download Builder](http://jqueryui.com/download/) and toggle all options.Choose the `Smoothness` theme, download and unpack.The following files are needed:* UI Core: all JS files* Interactions: all JS files* Widgets: all JS files* DatePicker I18N: only the combined file is needed, and it should be renamed as `jquery.ui.datepicker-i18n.js`* Effects: only the combined file is needed, and it should be renamed as `jquery.ui.effect-all.js`* Theme: Only the combined CSS file and the image files are needed. Rename the CSS file as `jquery.ui.css`.