Google has released an update for its official Google Reader Android application. The new update brings two new home-screen widgets, a ‘mark previous as read’ button and Russian translations. Unread count widget – Choose any feed, label, person, or “all items” and get the unread count on your home screen. Clicking on the widget will take you straight to that stream. News ticker widget – If you prefer a bit more information, you can add a larger size widget that cycles through items on any stream you want in Reader. Clicking any headline will take you to the article, while clicking the folder will take you to that stream. Mark…