HD player update to support scheduling

The good old HD image/video player package has been updated to now also support scheduling and thus also playlists including scheduled items. After you update (by clicking the “Check for updates” in your imported package), a new “schedule” option will be added to each item in your playlist configuration allowing you to specify a schedule.

The scheduling also works in combination with synced playback. Although in that case it might happen that playback might have to wait a moment to reach the next synchronization point. To help with that, you can now also specify an “idle” image. When set to anything other than “loading.png”, the image will be shown fullscreen if either no item is scheduled (or the playlist is empty) or playback has to wait to resync on schedule changes.

Feedback welcome.