Removed white mark from app slider preview image (shown on admin side when choosing a layout).
Edit slider page now shows 'Icon/Application' on both the tab, 'Add' button and status messages if the slider is an app slider.
Shows default text ('Slide for URL "http://domain.com") on the list of slides if no title is set.
Added help text below list of slides and slide title/tooltip edit boxes to call attention to using the display section for title/tooltip visibility.