Netflix's Just for Kids portal may already be a parent's ticket to saving money on endless Dora the Explorer DVDs without keeping a constant watch on the screen, but it has so far been left to consoles and the web. That's not much help to movie-loving grownups who'd sometimes like to free the PC or TV for their own streaming sessions -- so it's likely a relief to many that the Just for Kids interface is now available on iPads. Like on bigger screens, the