Animated main menu support
Replace the main menu background image with a menu_background.bik video if existing.
(RM-1362 from redmine: created on 2014-05-29 by scrawl ., , closed on 2014-05-30 by scrawl .)
Replace the main menu background image with a menu_background.bik video if existing.
(RM-1362 from redmine: created on 2014-05-29 by scrawl ., , closed on 2014-05-30 by scrawl .)