fix ImageLayer "first update" when not added to the root (me.game.world) container
fix ImageLayer "first update" when not added to the root (me.game.world) container

Not sure how to better fix this one actually

rlugojr/melonJS,rlugojr/melonJS,melonjs/melonJS,melonjs/melonJS,rlugojr/melonJS