Change buttons area in menus to fit images

[Magalii]

The idea is that instead of clicking on a button that corresponds to the area of a text, we can click anywhere on the image corresponding to the world or the game we want to access.

In the main menu, one easy way to do that would be to change the Texture of the images for the different worlds in Images so we can add a listener to it. For the animation, we could create a transparent Actor that is the size if the Animation so we can add Listener to it.

For the menu in the world Chilly Beachy. We need remove the one unique image there is to add to distinct images. We can then add listeners to those images. The images are World1EcranMenuCadre1.png and World1EcranMenuCadre2.png in Android/assets/EcranMenu.