FLUID-5440: Fixed the focus styling with themed show/hide buttons on the prefs framework demo.
FLUID-5440: Added "fl-focus" into some kind of news demo.
Merge remote-tracking branch 'cindy/FLUID-5440'

* cindy/FLUID-5440:
  FLUID-5440: Added "fl-focus" into some kind of news demo.
  FLUID-5440: Fixed the focus styling with themed show/hide buttons on the prefs framework demo.