Fixed deprecation warnings https://bugzilla.gnome.org/show_bug.cgi?id=728371

Fixed the following warnings:
* Actor.add_actor deprecation warnings - replaced by Actor.add_child
* Actor.animate deprecation warnings - replaced by setting easing properties
* Actor.depth deprecation warnings - replaced with z-position
* Stage.color deprecation warning - replaced with Actor.background_color
* Group.new deprecation warning - replaced with Actor.new
* Clutter.Texture.from_file warning - replaced with Clutter.Image preloaded from a GdkPixbuf
Fixed anchor_point deprecation warning. https://bugzilla.gnome.org/show_bug.cgi?id=728371

Fixed by replacing with a similar animation, without scaling,
but using the z position instead.