Issue #1647 NUX: Content on create account screen is shifted up after returning from...

... Terms of Service screen.
Issue #1647 
Because we show and hide the navigation bar when we show the TOS Web View, the view returned from self.view is shorter because the navbar animation has not completed.  I changed it to check the height of the screen since we are hiding the nav bar.
We like to keep the else statement on the same line as the if statements closing brace.