Facebook today released an updated Facebook Messenger app that has been redesigned for iOS 7 with a simpler interface and a cleaner look for easier navigation. The update also includes messaging via phone number, allowing users to send messages to people outside of Facebook, and there is a new icon that indicates which friends are logged into the app. What's New: A completely new design, updated for iOS 7. Find more people to message: Now you can text your phone contacts even if you’re not Facebook friends. And it’s easy to add new contacts–just enter a phone number.Facebook Messenger is