Changes

* Change the presentation mx:SWFLoader to mx:Image

** Extend mx:Image class to allow it be focused

** Attach slide plain text to slide.accessibilityDescription

* Add audio indicator for slide change and new chat message

** Add a timer so the user isn't spammed constantly

** Only play ding if accessible device is being used

* Add shortcut keys to navigate to chat messages

** Key for last viewed message

** Key for newest message

* Alter MDIWindow to allow it to be focused

* When an item in a window is focused bring the window to the front

* Fix the content resize issue caused by altering a window's size by any means other then dragging an edge