Added central notification service

Any plugin can create/send messages to the new central notification service.
For message management, there is a new GUINotifier plugin. From the plugin you can mark message as read, delete message, or you can go to its source.
It's even possible to playback video directly (if the message contains a video URL).
All messages are stored in a new database.
A new GUINotifierControl is now available: it connects to the service and automatically rotates all unread messages.
In the files below, you can find skin examples for new GUINotifier plugin.  This zipfile contains a new Titan skin version using the plugin.
To test the service, the GUIRSSFeed plugin can be used. Here is a URL feed example: MediaPortalFeed
A new action has been added: ACTION_SHOW_NEWS = 3013. This will allow to assign key/button press to show the myNotifier plugin.

GUINotifierControl skin elements

Skin example in BasicHome.xml

Skin example in mytvFullScreen.xml (id = 200)

myNotifier plugin

Skin example in common.time.xml to inform about new messages