Pexeso update

- Planes on gameTiles' scale is adjusted by given image width-to-height ratio, i.e. non-square images are not stretched
- Fixed one image in Misc set in Simiarity game
Fix some warnings with polycounts.
Merge branch 'Pexeso' of https://github.com/BrainProject/UnityTemp into develop
Change color or played minigames.
Set SocialGame as inactivity minigame when Kinect is connected (else HanoiTowers is loaded).
Fix multiple cursor bug.
Merge branch 'feature/SocialGame' of https://github.com/BrainProject/UnityTemp into develop

Conflicts:
	Assets/Minigames/SocialGame/GUI/Stickman.fbx.meta