Better handling of empty Favorites pane

[Jimmbo]

Until you add a favorite, the Favorites pane is blank. We need to insert copy there. I think favorites play "more often". If not, you'll have explained it to me in the previous issue and I'll fix this.

To add favorites (which makes them play more often), click the star icon in one or more of the videos listed below in this sidebar. You can always come back here to un-favorite a video if you get tired of it.

[glouel]

This is part of the UI enhancements coming soon.