Parkour:
- Party invites can now expire (thanks @MisterMel)
- Leaving server whilst in a party will now remove the player from the party after 30 seconds (thanks @MisterMel)
- Added helpful welcome hologram when new maps are created (thanks @MisterMel)
- Tidied up the "Edit parkour info" menu
- New players joining a party now get teleported to the current map being played (thanks @MisterMel)
- Fixed error when player tried playing time trial whilst already in playmode (thanks @MisterMel)
