Onebox support added to news entries

I’ve added Onebox support to news entries on the main site, which automatically converts a URL into an embedded media player or link preview. Onebox is the same library that this forum uses for embeds/previews although the presentation of previews will vary.

As an example, I’ve updated @Eliot-Ness’s news entry to include an embedded SoundCloud player.

As always, it’s preferable that we upload any content intended to be “permanent” to Panzer Dragoon Legacy itself, as you never know how long these external services are going to last for.