Better frontend notification and GUI updating

couchpotato/core/_base/clientscript/main.py

@@ -35,6 +35,7 @@ class ClientScript(Plugin):
             'scripts/library/scrollspy.js',
             'scripts/library/spin.js',
             'scripts/library/Array.stableSort.js',
+            'scripts/library/async.js',
             'scripts/couchpotato.js',
             'scripts/api.js',
             'scripts/library/history.js',

couchpotato/core/_base/updater/static/updater.js

@@ -24,7 +24,7 @@ var UpdaterBase = new Class({
 					self.doUpdate();
 				else {
 					App.unBlockPage();
-					App.fireEvent('message', 'No updates available');
+					App.on('message', 'No updates available');
 				}
 			}
 		})