Update almost all the things!

There's still some stuff that needs to be fixed: 

* Turret heads don't have a hitbox for some reason so you can't easily remove them. 
* There's still a bunch of english text hard-coded into the mod. 
* Dropping turret heads and bases doesn't work (dunno what that does). 
* Turret bases cannot extract energy from directly adjacent energy cells.
* A lot of redundant code in the GUI, container and tile entity classes
* Turret heads randomly stop rendering, I don't know anything about rendering
* Turret heads don't aim at their target, not sure if they ever did.