Precompile datepicker i18n files for each language.

Not an optimal solution, because it uses files from our own repository instead of the bundle, but found no other solution for now.

app/assets/javascripts-jquery-ui/datepicker-he.js

@@ -0,0 +1,37 @@
+/* Hebrew initialisation for the UI Datepicker extension. */
+/* Written by Amir Hardon (ahardon at gmail dot com). */
+( function( factory ) {
+	if ( typeof define === "function" && define.amd ) {
+
+		// AMD. Register as an anonymous module.
+		define( [ "../widgets/datepicker" ], factory );
+	} else {
+
+		// Browser globals
+		factory( jQuery.datepicker );
+	}
+}( function( datepicker ) {
+
+datepicker.regional.he = {
+	closeText: "סגור",
+	prevText: "<הקודם",
+	nextText: "הבא>",
+	currentText: "היום",
+	monthNames: [ "ינואר","פברואר","מרץ","אפריל","מאי","יוני",
+	"יולי","אוגוסט","ספטמבר","אוקטובר","נובמבר","דצמבר" ],
+	monthNamesShort: [ "ינו","פבר","מרץ","אפר","מאי","יוני",
+	"יולי","אוג","ספט","אוק","נוב","דצמ" ],
+	dayNames: [ "ראשון","שני","שלישי","רביעי","חמישי","שישי","שבת" ],
+	dayNamesShort: [ "א'","ב'","ג'","ד'","ה'","ו'","שבת" ],
+	dayNamesMin: [ "א'","ב'","ג'","ד'","ה'","ו'","שבת" ],
+	weekHeader: "Wk",
+	dateFormat: "dd/mm/yy",
+	firstDay: 0,
+	isRTL: true,
+	showMonthAfterYear: false,
+	yearSuffix: "" };
+datepicker.setDefaults( datepicker.regional.he );
+
+return datepicker.regional.he;
+
+} ) );