Cut documentation into tabs

[rom1504]

I propose something like one tab by data type (block, entity, protocol, ...) and then in each tab you can choose schema or value (like http://getbootstrap.com/javascript/#tabs )

That way the schema and the value display can take as much room as they need, and it will be less confusing to point somebody to the protocol values for example.

[rom1504]

In progress http://rom1504.github.io/minecraft-data/

[rom1504]

done