1 more sky :)

4 new skys.

Adjusting the position of icons.

Fix the size of the blue sky.

A little adjustment model and code.

Update 3:

- remove all test models / textures
- add 3 new textures
- change icon

Update with tag

Update 2:

- remove second test texture
- change icon
- add new model

What are the options currently in the game engine?

Now there are 4 models:
1. original first model
2. new better model
3. new model + visible from big range (still in work), movable shadow on planet
4. new model + visible from big range (still in work), shadow is everywhere (still in work)