Add server (web/socket), create socket system, better helper loader.

- The Magic Mirror is now hosted via a express server, allowing you to
load it from an external client (for debugging.)
- It now includes a socket system to communicate between the
node_helper and the client module.
- node_helpers are now only loaded if the module is configured in the
config.

js/socketclient.js

@@ -0,0 +1,83 @@
+if (typeof window === 'undefined') {
+	// Only perfom this part if is isn't running in the browser.
+
+	// Load socket client
+	var io = require('socket.io-client');
+
+	// Load config
+	var fs = require('fs');
+
+	var config = {};
+
+	var defaults = require(__dirname + '/defaults.js');
+	var configFilename = __dirname + '/../config/config.js';
+
+	try {
+	    fs.accessSync(configFilename, fs.R_OK);
+	    var c = require(configFilename);
+		config = Object.assign(defaults, c);
+	} catch (e) {
+	    config = defaults;
+	}
+}
+
+
+var MMSocket = function(moduleName) {
+
+	var self = this;
+
+	if (typeof moduleName !== 'string') {
+		throw new Error('Please set the module name for the MMSocket.');
+	}
+
+	self.moduleName = moduleName;
+
+	// Private Methods
+	var socketBase = (typeof window === 'undefined') ? 'http://localhost:'+config.port : '';
+	socket = io(socketBase + '/' + self.moduleName);
+
+	var notificationCallback = function() {};
+
+	socket.on('connect', function(s) {
+
+		// add a catch all event.
+		var onevent = socket.onevent;
+		socket.onevent = function (packet) {
+			var args = packet.data || [];
+			onevent.call (this, packet);    // original call
+			packet.data = ["*"].concat(args);
+			onevent.call(this, packet);      // additional call to catch-all
+		};
+
+		// register catch all.
+		socket.on('*', function (notification, payload) {
+			if (notification !== '*') {
+				//console.log('Received notification: ' + notification +', payload: ' + payload);
+				notificationCallback(notification, payload);
+			}
+		});
+
+
+	});
+
+	var sendNotification = function(notification, payload) {
+		//console.log('Send notification: ' + notification +', payload: ' + payload);
+		socket.emit(notification, payload);
+	};
+
+	// Public Methods
+	this.setNotificationCallback = function(callback) {
+		notificationCallback = callback;
+	};
+
+	this.sendNotification = function(notification, payload) {
+		if (typeof payload === 'undefined') {
+			payload = {};
+		}
+		sendNotification(notification, payload);
+	};
+};
+
+if (typeof module !== 'undefined') {
+	module.exports = MMSocket;
+}