Sphere-Bot hydraulic upgrade.

I added 24 hydraulic-elements to the12 limbs.


Now this robot looks much more stable as [the old version](https://skfb.ly/QsWV).

Modelled, rigged and animated in [ Blender 2.79](https://www.blender.org/) for the textures I used [3d-coat](https://goo.gl/cJLgfg).
Animations in scene:
- Rolling
- Opening / Idle
- Walk
- Run
- Attack
- Run attack
- Jump/ Fly