Restore password widget

Hence allowing TiddlySpot integration to work again

core/modules/widgets/password.js

@@ -0,0 +1,45 @@
+/*\
+title: $:/core/modules/widget/password.js
+type: application/javascript
+module-type: widget
+
+Implements the password widget.
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var PasswordWidget = function(renderer) {
+	// Save state
+	this.renderer = renderer;
+	// Generate child nodes
+	this.generate();
+};
+
+PasswordWidget.prototype.generate = function() {
+	// Get the parameters from the attributes
+	this.name = this.renderer.getAttribute("name");
+	// Get the current password
+	var password = $tw.browser ? $tw.utils.getPassword(this.name) : "";
+	// Generate our element
+	this.tag = "input";
+	this.attributes = {
+		type: "password",
+		value: password
+	};
+	this.events = [
+		{name: "keyup", handlerObject: this},
+		{name: "input", handlerObject: this}];
+};
+
+PasswordWidget.prototype.handleEvent = function(event) {
+	var password = this.renderer.domNode.value;
+	return $tw.utils.savePassword(this.name,password);
+};
+
+exports.password = PasswordWidget;
+
+})();