Rework on AntOS core to provide support to both mobile and desktop devices (experimental):

- Redesign the core UI API and tags to support Mobile devices
- Add new StackMenu tag
- Support touch events handling on touch devices
- Redesign File and Setting to work on mobile
- Improve Anouncement API
- Rework on default themes

src/core/pm.ts

@@ -139,7 +139,7 @@ namespace OS {
                 } else {
                     GUI.detachservice(app as application.BaseService);
                 }
-                announcer.unregister(app);
+                // announcer.unregister(app);
                 delete PM.processes[app.name][i];
                 PM.processes[app.name].splice(i, 1);
             }