commit initial skeleton of the plugin

nothing is working

js/ABOUT.js

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+Ext.namespace('Zarafa.plugins.passwd');
+
+/**
+ * @class Zarafa.plugins.passwd.ABOUT
+ *
+ * The copyright string holding the copyright notice for the Zarafa passwd Plugin.
+ */
+Zarafa.plugins.sugarcrm.ABOUT = "Something should be here";

js/PasswdPlugin.js

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+Ext.namespace('Zarafa.plugins.passwd');
+
+/**
+ * @class Zarafa.plugins.passwd.PasswdPlugin
+ * @extends Zarafa.core.Plugin
+ *
+ * Passwd plugin.
+ * Allows users to change password from webapp.
+ */
+Zarafa.plugins.passwd.PasswdPlugin = Ext.extend(Zarafa.core.Plugin, {
+
+	/**
+	 * Initialize the plugin by registering to the insertion point
+	 * to add something to the right end of the main tab bar.
+	 * @protected
+	 */
+	initPlugin : function()
+	{
+		Zarafa.plugins.passwd.PasswdPlugin.superclass.initPlugin.apply(this, arguments);
+
+		this.registerInsertionPoint('main.maintabbar.right', this.putTabbarButton, this);
+	},
+
+	/**
+	 * Create the button to add to the insertion point as called
+	 * by init().
+	 * @return A struct with the necessary configuration for the button.
+	 * @private
+	 */
+	putTabbarButton : function()
+	{
+		return {
+			text : _('Change Password'),
+			handler : this.clickPasswdButton
+		};
+	},
+
+	/**
+	 * Trigger function called when the user clicks the button in the
+	 * main tab bar.
+	 * @private
+	 */
+	clickPasswdButton : function()
+	{
+		// open a dialog
+	}
+});
+
+Zarafa.onReady(function() {
+	container.registerPlugin(new Zarafa.core.PluginMetaData({
+		name : 'passwd',
+		displayName : _('Password Change Plugin'),
+		about : Zarafa.plugins.passwd.ABOUT,
+		pluginConstructor : Zarafa.plugins.passwd.PasswdPlugin
+	}));
+});