Modbox update for more customization!

• Display all user’s mixes by clicking the DJ name during a mix replay.
• Search for a mod using the search bar in the Modlist.
• Modders:
- Build a mod with less than 20 sounds/pictos.
- Create bigger or smaller characters by changing default sprite size.
- Display an animation upside down (polo bat).
- Add a top or bottom foreground in front of the characters on the stage.
- Check the doc and download the Modbox here.