Version 1.2

Now with the ability to put items at a fixed position inside the world.
Meaning that the coordinates setup in the editor will be considered world coordinates,
and the item will always appear at that location when enabled.

This makes the ability to embed world overlays inside avatars much more easily.

Along with that, a few bug were fixed and the UI is now simpler to use.
You can just drop the avatar and the items on top of the configuration windows,
without having to "aim" at a specific spot of the UI.

It also has a Japanese translation.
Though, the translation system is akin to banging rocks together.
I'll try to have a language selection menu for the next releases.

I also cleaned the code and made it more readable to me, so that I can
improve much more easily over time.