Rotatable blueprint
[Fix] Rotatable Blueprints
add GuiNametag background
Centered angle label
Rewrite Blueprint:
* Creative player don't need chisel and hummer, stack is endless;
* Angles rewitable;
* BlueprintTurnCubePacket replaced by ItemNBTPacket.
* Blueprint GUI opens when click on non Detailed block or in empty.
Stretching Blueprint GUI
Merge pull request #673 from anion155/rotatable_blueprint

Rotatable blueprint