F1 now activates the HelpStateStoryboard
+HelpControl blank class.
Now hosting main stack panel inside a grid

This will allow us to place the help control in the same spot as the stack panel.
+HelpControl on top of the stack panel

Is invisible and not hit-testable by default. Will be animated in by
storyboards as states need to change.
+Initial state transition animation for showing the help control

Sizes the window up to 200 pixels tall, fades in the control, and
makes it hit test visible.
Now activating the correct storyboard on F1, since the name changed

Updating test to watch for this new state name.