+ Concept of PluginModule and inherited classes such as ServerModule, MenuModule, ...

* Client now tracks current menu module. Auto detach events, etc.

core/server_module.js

@@ -0,0 +1,19 @@
+/* jslint node: true */
+'use strict';
+
+var PluginModule			= require('./plugin_module.js').PluginModule;
+
+exports.ServerModule	= ServerModule;
+
+function ServerModule() {
+	PluginModule.call(this);
+
+	this.viewControllers = [];
+}
+
+require('util').inherits(ServerModule, PluginModule);
+
+ServerModule.prototype.createServer = function() {
+	console.log('ServerModule createServer')
+	return null;
+};