Add PickUpItem and Teleport events to score-boxes.

[Pugzy]

Re-write of score-box module to add PickUpItem and Teleport events.

Although a few bits don't seem too logical it is true to PGM.

• An example of this is when the players inventory is checked for a matching ItemStack and then removes any item of this item.getType giving them points for each.

Even though it seems silly I think the same functionality is essential to ensure maps work the same.