Refactor has begun.
We had things halfway between the way Bukkit does things, and the way sonar wants things.
For sanity and code readability we should just go with how Bukkit organizes things.
This means player data is in the player folder, not in the data folder.

Also, I've begun work on converting over all the data classes to the more generic data manager. While I'm at it, I'll probably clean up and organize every class I touch to fit the standard.

I'm looking for input, but I'm not sure how much you can get from this commit, so I guess just look at what I've changed so far for data, and the proposed new plugin structure, and let me know from there.

Related to issue #198.