Render entities before translucent blocks.

[stackotter]

If you want to start contributing to the renderer, this issue will be a good way to learn your way around the rendering code.

The current render order is:

1. Opaque blocks
2. Translucent blocks
3. Entities
4. GUI

But this doesn't produce the correct result in every case as seen below. The correct order can be obtained by swapping entities and translucent blocks. This will require some refactoring.

[gracien-app]

It's mine.